--- a/browser/Makefile.in
+++ b/browser/Makefile.in
@@ -4,39 +4,16 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(topsrcdir)/config/config.mk
 
-PARALLEL_DIRS = \
-  base \
-  components \
-  fuel \
-  locales \
-  modules \
-  themes \
-  extensions \
-  $(NULL)
-
-DIRS = \
-  devtools \
-  app \
-  $(NULL)
-
-ifdef MOZ_METRO
-DIRS += metro
-endif
-
-ifdef MAKENSISU
-DIRS += installer/windows
-endif
-
 include $(topsrcdir)/config/rules.mk
 
 ifdef MAKENSISU
 
 # For Windows build the uninstaller during the application build since the
 # uninstaller is included with the application for mar file generation.
 libs::
 	$(MAKE) -C installer/windows uninstaller

new file mode 100644
--- /dev/null
+++ b/browser/app.mozbuild
@@ -0,0 +1,21 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+if not CONFIG['LIBXUL_SDK']:
+    app_libxul_dirs = []
+    include('/toolkit/toolkit.mozbuild')
+
+if CONFIG['MOZ_EXTENSIONS']:
+    add_tier_dir('app', 'extensions')
+
+add_tier_dir('app', [CONFIG['MOZ_BRANDING_DIRECTORY']])
+
+if CONFIG['MOZ_WEBAPP_RUNTIME']:
+    add_tier_dir('app', 'webapprt')
+
+# Never add tier dirs after browser because they apparently won't get
+# packaged properly on Mac.
+add_tier_dir('app', 'browser')
+

--- a/browser/app/Makefile.in
+++ b/browser/app/Makefile.in
@@ -4,17 +4,16 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS        = profile/extensions
 dist_dest   = $(DIST)/$(MOZ_MACBUNDLE_NAME)
 
 ifdef ENABLE_MARIONETTE
 DEFINES += -DENABLE_MARIONETTE=1
 endif
 
 PREF_JS_EXPORTS = $(srcdir)/profile/firefox.js \
 		  $(NULL)

new file mode 100644
--- /dev/null
+++ b/browser/app/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['profile/extensions']

--- a/browser/app/profile/extensions/Makefile.in
+++ b/browser/app/profile/extensions/Makefile.in
@@ -6,21 +6,16 @@
 DEPTH      = @DEPTH@
 topsrcdir  = @top_srcdir@
 srcdir     = @srcdir@
 VPATH      = @srcdir@
 
 DISTROEXT = $(call core_abspath,$(FINAL_TARGET))/distribution/extensions
 
 include $(DEPTH)/config/autoconf.mk
-
-DIRS = \
-  {972ce4c6-7e08-4474-a285-3208198ce6fd} \
-  $(NULL)
-
 include $(topsrcdir)/config/config.mk
 
 ifneq (,$(filter beta,$(MOZ_UPDATE_CHANNEL)))
 EXTENSIONS = \
   testpilot@labs.mozilla.com \
   $(NULL)
 
 all_xpis = $(foreach dir,$(EXTENSIONS),$(DISTROEXT)/$(dir).xpi)

new file mode 100644
--- /dev/null
+++ b/browser/app/profile/extensions/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['{972ce4c6-7e08-4474-a285-3208198ce6fd}']

new file mode 100644
--- /dev/null
+++ b/browser/app/profile/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/base/Makefile.in
+++ b/browser/base/Makefile.in
@@ -11,18 +11,16 @@ VPATH   = @srcdir@
 include $(DEPTH)/config/autoconf.mk
 
 include $(topsrcdir)/config/config.mk
 
 abs_srcdir = $(call core_abspath,$(srcdir))
 
 CHROME_DEPS += $(abs_srcdir)/content/overrides/app-license.html
 
-TEST_DIRS += content/test
-
 include $(topsrcdir)/config/rules.mk
 
 PRE_RELEASE_SUFFIX := ""
 
 DEFINES += \
 	-DMOZ_APP_VERSION=$(MOZ_APP_VERSION) \
 	-DAPP_LICENSE_BLOCK=$(abs_srcdir)/content/overrides/app-license.html \
 	-DPRE_RELEASE_SUFFIX="$(PRE_RELEASE_SUFFIX)" \

--- a/browser/base/content/test/Makefile.in
+++ b/browser/base/content/test/Makefile.in
@@ -3,21 +3,16 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 relativesrcdir  = @relativesrcdir@
 
-DIRS += \
-		newtab \
-		social \
-		$(NULL)
-
 include $(DEPTH)/config/autoconf.mk
 
 MOCHITEST_FILES = \
 		head_plain.js \
 		test_feed_discovery.html \
 		feed_discovery.html \
 		test_bug395533.html \
 		bug395533-data.txt \

new file mode 100644
--- /dev/null
+++ b/browser/base/content/test/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['newtab', 'social']
+

new file mode 100644
--- /dev/null
+++ b/browser/base/content/test/newtab/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/base/content/test/social/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/base/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['content/test']

--- a/browser/branding/aurora/Makefile.in
+++ b/browser/branding/aurora/Makefile.in
@@ -5,21 +5,16 @@
 DEPTH = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir = @srcdir@
 VPATH = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/config.mk
 
-DIRS = \
-	content \
-	locales \
-	$(NULL)
-
 PREF_JS_EXPORTS = $(srcdir)/pref/firefox-branding.js
 
 # On Windows only do this step for browser, skip for metro.
 ifeq ($(MOZ_WIDGET_TOOLKIT) $(DIST_SUBDIR),windows browser)
 BRANDING_FILES := \
 	firefox.ico \
 	document.ico \
 	branding.nsi \

new file mode 100644
--- /dev/null
+++ b/browser/branding/aurora/content/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/aurora/locales/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/aurora/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['content', 'locales']
+

--- a/browser/branding/nightly/Makefile.in
+++ b/browser/branding/nightly/Makefile.in
@@ -5,21 +5,16 @@
 DEPTH = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir = @srcdir@
 VPATH = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/config.mk
 
-DIRS = \
-	content \
-	locales \
-	$(NULL)
-
 PREF_JS_EXPORTS = $(srcdir)/pref/firefox-branding.js
 
 # On Windows only do this step for browser, skip for metro.
 ifeq ($(MOZ_WIDGET_TOOLKIT) $(DIST_SUBDIR),windows browser)
 BRANDING_FILES := \
 	firefox.ico \
 	document.ico \
 	branding.nsi \

new file mode 100644
--- /dev/null
+++ b/browser/branding/nightly/content/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/nightly/locales/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/nightly/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['content', 'locales']

--- a/browser/branding/official/Makefile.in
+++ b/browser/branding/official/Makefile.in
@@ -5,21 +5,16 @@
 DEPTH = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir = @srcdir@
 VPATH = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/config.mk
 
-DIRS = \
-	content \
-	locales \
-	$(NULL)
-
 PREF_JS_EXPORTS = $(srcdir)/pref/firefox-branding.js
 
 # On Windows only do this step for browser, skip for metro.
 ifeq ($(MOZ_WIDGET_TOOLKIT) $(DIST_SUBDIR),windows browser)
 BRANDING_FILES := \
 	firefox.ico \
 	document.ico \
 	branding.nsi \

new file mode 100644
--- /dev/null
+++ b/browser/branding/official/content/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/official/locales/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/official/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['content', 'locales']
+

--- a/browser/branding/unofficial/Makefile.in
+++ b/browser/branding/unofficial/Makefile.in
@@ -5,21 +5,16 @@
 DEPTH = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir = @srcdir@
 VPATH = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/config.mk
 
-DIRS = \
-	content \
-	locales \
-	$(NULL)
-
 PREF_JS_EXPORTS = $(srcdir)/pref/firefox-branding.js
 
 # On Windows only do this step for browser, skip for metro.
 ifeq ($(MOZ_WIDGET_TOOLKIT) $(DIST_SUBDIR),windows browser)
 BRANDING_FILES := \
 	firefox.ico \
 	document.ico \
 	branding.nsi \

new file mode 100644
--- /dev/null
+++ b/browser/branding/unofficial/content/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/unofficial/locales/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/branding/unofficial/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['content', 'locales']
+

--- a/browser/build.mk
+++ b/browser/build.mk
@@ -1,32 +1,12 @@
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-ifndef LIBXUL_SDK
-include $(topsrcdir)/toolkit/toolkit-tiers.mk
-endif
-
-TIERS += app
-
-ifdef MOZ_EXTENSIONS
-tier_app_dirs += extensions
-endif
-
-tier_app_dirs += $(MOZ_BRANDING_DIRECTORY)
-
-ifdef MOZ_WEBAPP_RUNTIME
-tier_app_dirs += webapprt
-endif
-
-tier_app_dirs += browser
-# Never add other tier_app_dirs after browser. They won't get packaged
-# properly on mac.
-
 ################################################
 # Parallel build on Windows with GNU make check
 
 default::
 ifeq (,$(findstring pymake,$(MAKE)))
 ifeq ($(HOST_OS_ARCH),WINNT)
 ifneq (1,$(NUMBER_OF_PROCESSORS))
 	@echo $(if $(findstring -j,$(value MAKEFLAGS)), \

--- a/browser/components/Makefile.in
+++ b/browser/components/Makefile.in
@@ -23,38 +23,13 @@ EXTRA_COMPONENTS = \
 
 EXTRA_PP_COMPONENTS = \
   nsBrowserContentHandler.js \
   nsBrowserGlue.js \
   $(NULL)
 
 EXTRA_JS_MODULES = distribution.js
 
-PARALLEL_DIRS = \
-  about \
-  certerror \
-  dirprovider \
-  downloads \
-  feeds \
-  places \
-  preferences \
-  privatebrowsing \
-  search \
-  sessionstore \
-  shell \
-  sidebar \
-  tabview \
-  migration \
-  $(NULL)
-
-ifdef MOZ_SAFE_BROWSING
-PARALLEL_DIRS += safebrowsing
-endif
-
-TEST_DIRS += test
-
-DIRS += build
-
 ifdef MOZILLA_OFFICIAL
 DEFINES += -DOFFICIAL_BUILD=1
 endif
 
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/about/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/build/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/certerror/Makefile.in
+++ b/browser/components/certerror/Makefile.in
@@ -6,11 +6,9 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/certerror/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/certerror/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/dirprovider/Makefile.in
+++ b/browser/components/dirprovider/Makefile.in
@@ -7,18 +7,16 @@ topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE = browserdir
 LIBRARY_NAME = browserdir_s
 
-TEST_DIRS += tests
-
 FORCE_STATIC_LIB = 1
 USE_STATIC_LIBS = 1
 
 EXPORTS_NAMESPACES = mozilla/browser
 EXPORTS_mozilla/browser = DirectoryProvider.h
 
 CPPSRCS = DirectoryProvider.cpp
 

new file mode 100644
--- /dev/null
+++ b/browser/components/dirprovider/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['tests']

new file mode 100644
--- /dev/null
+++ b/browser/components/dirprovider/tests/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/downloads/Makefile.in
+++ b/browser/components/downloads/Makefile.in
@@ -4,13 +4,9 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = src
-
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/downloads/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['src']
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/downloads/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/downloads/test/Makefile.in
+++ b/browser/components/downloads/test/Makefile.in
@@ -7,11 +7,9 @@ srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 relativesrcdir = @relativesrcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 XPCSHELL_TESTS = unit
 
-DIRS = browser
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/downloads/test/browser/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/downloads/test/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['browser']

--- a/browser/components/feeds/Makefile.in
+++ b/browser/components/feeds/Makefile.in
@@ -4,13 +4,9 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = public src
-
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/feeds/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['public', 'src']
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/feeds/public/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/feeds/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/feeds/test/Makefile.in
+++ b/browser/components/feeds/test/Makefile.in
@@ -8,20 +8,16 @@ srcdir		= @srcdir@
 VPATH		= @srcdir@
 relativesrcdir  = @relativesrcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= test_browser_feeds
 XPCSHELL_TESTS	= unit
 
-DIRS = \
-	chrome \
-	$(NULL)
-
 MOCHITEST_FILES =	bug408328-data.xml \
 		bug368464-data.xml \
 		test_bug494328.html \
 		bug494328-data.xml \
 		test_bug589543.html \
 		bug589543-data.xml \
 		test_registerHandler.html \
 		valid-feed.xml \

new file mode 100644
--- /dev/null
+++ b/browser/components/feeds/test/chrome/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/feeds/test/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['chrome']

--- a/browser/components/migration/Makefile.in
+++ b/browser/components/migration/Makefile.in
@@ -4,13 +4,9 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS		= public src
-
-TEST_DIRS += tests
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/migration/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['public', 'src']
+TEST_DIRS += ['tests']

new file mode 100644
--- /dev/null
+++ b/browser/components/migration/public/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/migration/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/migration/tests/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/moz.build
@@ -0,0 +1,27 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+PARALLEL_DIRS += [
+    'about',
+    'certerror',
+    'dirprovider',
+    'downloads',
+    'feeds',
+    'places',
+    'preferences',
+    'privatebrowsing',
+    'search',
+    'sessionstore',
+    'shell',
+    'sidebar',
+    'tabview',
+    'migration',
+]
+
+if CONFIG['MOZ_SAFE_BROWSING']:
+    PARALLEL_DIRS += ['safebrowsing']
+
+TEST_DIRS += ['test']
+DIRS += ['build']

--- a/browser/components/places/Makefile.in
+++ b/browser/components/places/Makefile.in
@@ -5,15 +5,11 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = src
-
-TEST_DIRS += tests
-
 include $(topsrcdir)/config/rules.mk
 
 XPIDL_FLAGS += -I$(topsrcdir)/browser/components/

new file mode 100644
--- /dev/null
+++ b/browser/components/places/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['src']
+TEST_DIRS += ['tests']

new file mode 100644
--- /dev/null
+++ b/browser/components/places/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/places/tests/Makefile.in
+++ b/browser/components/places/tests/Makefile.in
@@ -10,11 +10,9 @@ VPATH		= @srcdir@
 relativesrcdir = @relativesrcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= test_browser_places
 
 XPCSHELL_TESTS = unit
 
-DIRS = browser chrome
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/places/tests/browser/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/places/tests/chrome/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/places/tests/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['browser', 'chrome']

--- a/browser/components/preferences/Makefile.in
+++ b/browser/components/preferences/Makefile.in
@@ -5,22 +5,16 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-PARALLEL_DIRS = \
-  in-content \
-  $(NULL)
-
-TEST_DIRS += tests
-
 include $(topsrcdir)/config/rules.mk
 
 DEFINES += \
 	-DMOZ_APP_NAME=$(MOZ_APP_NAME) \
 	-DMOZ_MACBUNDLE_NAME=$(MOZ_MACBUNDLE_NAME) \
 	$(NULL)
 
 ifneq (,$(filter windows gtk2 cocoa, $(MOZ_WIDGET_TOOLKIT)))

--- a/browser/components/preferences/in-content/Makefile.in
+++ b/browser/components/preferences/in-content/Makefile.in
@@ -4,18 +4,16 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += tests
-
 include $(topsrcdir)/config/rules.mk
 
 DEFINES += \
 	-DMOZ_APP_NAME=$(MOZ_APP_NAME) \
 	-DMOZ_MACBUNDLE_NAME=$(MOZ_MACBUNDLE_NAME) \
 	$(NULL)
 
 ifneq (,$(filter windows gtk2 cocoa, $(MOZ_WIDGET_TOOLKIT)))

new file mode 100644
--- /dev/null
+++ b/browser/components/preferences/in-content/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['tests']

new file mode 100644
--- /dev/null
+++ b/browser/components/preferences/in-content/tests/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/preferences/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+PARALLEL_DIRS += ['in-content']
+TEST_DIRS += ['tests']

new file mode 100644
--- /dev/null
+++ b/browser/components/preferences/tests/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/privatebrowsing/Makefile.in
+++ b/browser/components/privatebrowsing/Makefile.in
@@ -6,13 +6,9 @@ DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE = privatebrowsing
 
-DIRS = src
-
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['src']
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/privatebrowsing/test/Makefile.in
+++ b/browser/components/privatebrowsing/test/Makefile.in
@@ -7,12 +7,9 @@ topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 relativesrcdir  = @relativesrcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= test_privatebrowsing
 
-DIRS +=	browser \
-		$(NULL)
-
 include $(topsrcdir)/config/rules.mk

--- a/browser/components/privatebrowsing/test/browser/Makefile.in
+++ b/browser/components/privatebrowsing/test/browser/Makefile.in
@@ -7,11 +7,9 @@ topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 relativesrcdir  = @relativesrcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 MODULE		= test_privatebrowsing
 
-DIRS += perwindow
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/test/browser/global/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/test/browser/moz.build
@@ -0,0 +1,17 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# We have three category of browser-chrome tests:
+#  global: these tests focus on the global PB service implementation.
+#  perwindow: these tests focus on the per-window PB implementation.
+#  obsolete: these tests focus on the global mode, but the functionality
+#            that they are testing is specific to the global mode, and
+#            will never have a per-window counterpart.
+#
+# As a transition plan, we have divided the existing tests into the
+# global and obsolete categories, and we'll then focus on rewriting the
+# global tests to test the per-window mode.
+
+DIRS += ['perwindow']

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/test/browser/obsolete/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/test/browser/perwindow/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/privatebrowsing/test/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['browser']
+

--- a/browser/components/safebrowsing/Makefile.in
+++ b/browser/components/safebrowsing/Makefile.in
@@ -5,11 +5,9 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += content/test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/safebrowsing/content/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/safebrowsing/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['content/test']
+

--- a/browser/components/search/Makefile.in
+++ b/browser/components/search/Makefile.in
@@ -4,11 +4,9 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/search/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/search/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/sessionstore/Makefile.in
+++ b/browser/components/sessionstore/Makefile.in
@@ -13,13 +13,9 @@ include $(DEPTH)/config/autoconf.mk
 MODULE = sessionstore
 XPIDL_MODULE = sessionstore
 
 XPIDLSRCS = \
 	nsISessionStartup.idl \
 	nsISessionStore.idl \
   $(NULL)
 
-DIRS = src
-
-TEST_DIRS = test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/sessionstore/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['src']
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/sessionstore/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/sessionstore/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/shell/Makefile.in
+++ b/browser/components/shell/Makefile.in
@@ -4,13 +4,9 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = public src
-
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/components/shell/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['public', 'src']
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/shell/public/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/shell/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/shell/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/sidebar/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/components/tabview/Makefile.in
+++ b/browser/components/tabview/Makefile.in
@@ -5,14 +5,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/modules/* $(FINAL_TARGET)/modules/tabview

new file mode 100644
--- /dev/null
+++ b/browser/components/tabview/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/components/tabview/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/components/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/Makefile.in
+++ b/browser/devtools/Makefile.in
@@ -1,33 +1,14 @@
-#
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH   = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH   = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 include $(topsrcdir)/config/config.mk
 
-DIRS = \
-  inspector \
-  markupview \
-  webconsole \
-  commandline \
-  sourceeditor \
-  styleeditor \
-  styleinspector \
-  tilt \
-  scratchpad \
-  debugger \
-  layoutview \
-  shared \
-  responsivedesign \
-  framework \
-  profiler \
-  $(NULL)
-
 include $(topsrcdir)/config/rules.mk

--- a/browser/devtools/commandline/Makefile.in
+++ b/browser/devtools/commandline/Makefile.in
@@ -5,14 +5,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/commandline/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/commandline/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/debugger/Makefile.in
+++ b/browser/devtools/debugger/Makefile.in
@@ -4,14 +4,12 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/debugger/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/debugger/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/framework/Makefile.in
+++ b/browser/devtools/framework/Makefile.in
@@ -1,18 +1,15 @@
-#
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/framework/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/framework/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/inspector/Makefile.in
+++ b/browser/devtools/inspector/Makefile.in
@@ -1,18 +1,15 @@
-#
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools/

new file mode 100644
--- /dev/null
+++ b/browser/devtools/inspector/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/inspector/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/layoutview/Makefile.in
+++ b/browser/devtools/layoutview/Makefile.in
@@ -1,15 +1,12 @@
-#
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/devtools/layoutview/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']
+

new file mode 100644
--- /dev/null
+++ b/browser/devtools/layoutview/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/markupview/Makefile.in
+++ b/browser/devtools/markupview/Makefile.in
@@ -5,14 +5,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools
 
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/devtools/markupview/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/markupview/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/devtools/moz.build
@@ -0,0 +1,22 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += [
+    'inspector',
+    'markupview',
+    'webconsole',
+    'commandline',
+    'sourceeditor',
+    'styleeditor',
+    'styleinspector',
+    'tilt',
+    'scratchpad',
+    'debugger',
+    'layoutview',
+    'shared',
+    'responsivedesign',
+    'framework',
+    'profiler',
+]

--- a/browser/devtools/profiler/Makefile.in
+++ b/browser/devtools/profiler/Makefile.in
@@ -4,14 +4,12 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/profiler/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/profiler/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/responsivedesign/Makefile.in
+++ b/browser/devtools/responsivedesign/Makefile.in
@@ -1,15 +1,15 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-ifdef ENABLE_TESTS
-	DIRS += test
-endif
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/responsivedesign/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']
+

new file mode 100644
--- /dev/null
+++ b/browser/devtools/responsivedesign/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/scratchpad/Makefile.in
+++ b/browser/devtools/scratchpad/Makefile.in
@@ -5,14 +5,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/scratchpad/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/scratchpad/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/shared/Makefile.in
+++ b/browser/devtools/shared/Makefile.in
@@ -5,14 +5,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/shared/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/shared/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/sourceeditor/Makefile.in
+++ b/browser/devtools/sourceeditor/Makefile.in
@@ -5,17 +5,15 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 EXTRA_JS_MODULES = \
 	source-editor.jsm \
 	source-editor-orion.jsm \
 	source-editor-ui.jsm \
 	$(NULL)
 
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/devtools/sourceeditor/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/sourceeditor/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/styleeditor/Makefile.in
+++ b/browser/devtools/styleeditor/Makefile.in
@@ -4,14 +4,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/styleeditor/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/styleeditor/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/styleinspector/Makefile.in
+++ b/browser/devtools/styleinspector/Makefile.in
@@ -5,14 +5,12 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS = test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/styleinspector/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/devtools/styleinspector/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/tilt/Makefile.in
+++ b/browser/devtools/tilt/Makefile.in
@@ -4,15 +4,13 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
 
 libs::
 	$(NSINSTALL) $(srcdir)/*.jsm $(FINAL_TARGET)/modules/devtools
 	$(NSINSTALL) $(srcdir)/*.js $(FINAL_TARGET)/modules/devtools

new file mode 100644
--- /dev/null
+++ b/browser/devtools/tilt/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']
+

new file mode 100644
--- /dev/null
+++ b/browser/devtools/tilt/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/devtools/webconsole/Makefile.in
+++ b/browser/devtools/webconsole/Makefile.in
@@ -1,9 +1,8 @@
-#
 # This Source Code Form is subject to the terms of the Mozilla Public
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
@@ -13,11 +12,9 @@ include $(DEPTH)/config/autoconf.mk
 EXTRA_JS_MODULES = \
 		HUDService.jsm \
 		PropertyPanel.jsm \
 		NetworkPanel.jsm \
 		AutocompletePopup.jsm \
 		WebConsolePanel.jsm \
 		$(NULL)
 
-TEST_DIRS = test
-
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/devtools/webconsole/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']
+

new file mode 100644
--- /dev/null
+++ b/browser/devtools/webconsole/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/extensions/Makefile.in
+++ b/browser/extensions/Makefile.in
@@ -6,18 +6,16 @@ DEPTH      = @DEPTH@
 topsrcdir  = @top_srcdir@
 srcdir     = @srcdir@
 VPATH      = @srcdir@
 
 CHROMEDIR = $(call core_abspath,$(FINAL_TARGET))/chrome
 
 include $(DEPTH)/config/autoconf.mk
 
-TEST_DIRS += pdfjs/test
-
 ifdef MOZ_METRO
 GENERATED_DIRS = $(DIST)/bin/metro/chrome
 endif
 
 include $(topsrcdir)/config/rules.mk
 
 exclude_files = \
   test \

new file mode 100644
--- /dev/null
+++ b/browser/extensions/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['pdfjs/test']
+

new file mode 100644
--- /dev/null
+++ b/browser/extensions/pdfjs/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/fuel/Makefile.in
+++ b/browser/fuel/Makefile.in
@@ -4,14 +4,9 @@
 
 DEPTH     = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = public src
-
-TEST_DIRS += test
-
 include $(topsrcdir)/config/rules.mk
-

new file mode 100644
--- /dev/null
+++ b/browser/fuel/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['public', 'src']
+TEST_DIRS += ['test']

new file mode 100644
--- /dev/null
+++ b/browser/fuel/public/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/fuel/src/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/fuel/test/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/installer/Makefile.in
+++ b/browser/installer/Makefile.in
@@ -4,16 +4,18 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
+STANDALONE_MAKEFILE := 1
+
 include $(topsrcdir)/config/rules.mk
 
 MOZ_PKG_REMOVALS = $(srcdir)/removed-files.in
 
 MOZ_PKG_MANIFEST_P = $(srcdir)/package-manifest.in
 # Some files have been already bundled with xulrunner
 ifndef SYSTEM_LIBXUL
 MOZ_PKG_FATAL_WARNINGS = 1

new file mode 100644
--- /dev/null
+++ b/browser/installer/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/installer/windows/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/locales/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/metro/Makefile.in
+++ b/browser/metro/Makefile.in
@@ -5,31 +5,16 @@
 DEPTH     = ../..
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/config.mk
 
-DIRS = \
-	base \
-	components \
-	modules \
-	theme \
-	profile \
-	locales \
-	$(NULL)
-
-ifeq ($(OS_ARCH),WINNT)
-DIRS += shell
-endif
-
-TEST_DIRS += base/tests
-
 include $(topsrcdir)/config/rules.mk
 
 #########################################
 # application.ini
 
 ifdef MOZILLA_OFFICIAL
 DEFINES += -DMOZILLA_OFFICIAL
 endif

new file mode 100644
--- /dev/null
+++ b/browser/metro/base/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/base/tests/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/components/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/metro/locales/Makefile.in
+++ b/browser/metro/locales/Makefile.in
@@ -8,19 +8,16 @@ srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 # metrofx specific resources - this defines LOCALE_SRCDIR
 relativesrcdir = browser/metro/locales
 
 include $(DEPTH)/config/autoconf.mk
 include $(topsrcdir)/config/config.mk
 
-# process desktop related resources we reuse here:
-DIRS = import
-
 DEFINES += -DAB_CD=$(AB_CD)
 
 include $(topsrcdir)/config/rules.mk
 
 #########################################
 # Branding
 
 # 'browser/branding/nightly' -> 'nightly'

new file mode 100644
--- /dev/null
+++ b/browser/metro/locales/import/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/locales/moz.build
@@ -0,0 +1,8 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Process desktop related resource we reuse here.
+DIRS += ['import']
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/modules/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/moz.build
@@ -0,0 +1,19 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += [
+    'base',
+    'components',
+    'modules',
+    'theme',
+    'profile',
+    'locales',
+]
+
+if CONFIG['OS_ARCH'] == 'WINNT':
+    DIRS += ['shell']
+
+TEST_DIRS += ['base/tests']
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/profile/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/metro/shell/Makefile.in
+++ b/browser/metro/shell/Makefile.in
@@ -6,22 +6,16 @@ DEPTH     = ../../..
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH     = @srcdir@
 
 MODULE    = metro
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = commandexecutehandler linktool
-
-ifdef ENABLE_TESTS
-DIRS += testing
-endif
-
 export::
 	$(NSINSTALL) $(srcdir)/resources.pri $(DIST)/bin
 	$(RM) $(DIST)/bin/VisualElementsManifest.xml
 	$(PYTHON) $(topsrcdir)/config/Preprocessor.py -Fsubstitution $(DEFINES) $(ACDEFINES) -DMOZ_APP_DISPLAYNAME=${MOZ_APP_DISPLAYNAME} \
 	  $(srcdir)/VisualElementsManifest.xml.in > $(DIST)/bin/VisualElementsManifest.xml
 
 install::
 	$(NSINSTALL) $(srcdir)/resources.pri $(DIST)/bin

new file mode 100644
--- /dev/null
+++ b/browser/metro/shell/commandexecutehandler/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/shell/linktool/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/shell/moz.build
@@ -0,0 +1,12 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += [
+    'commandexecutehandler',
+    'linktool',
+]
+
+TEST_DIRS += ['testing']
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/shell/testing/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/metro/theme/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

--- a/browser/modules/Makefile.in
+++ b/browser/modules/Makefile.in
@@ -6,18 +6,16 @@ DEPTH   = @DEPTH@
 topsrcdir = @top_srcdir@
 srcdir    = @srcdir@
 VPATH   = @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
 include $(topsrcdir)/config/config.mk
 
-TEST_DIRS += test
-
 EXTRA_JS_MODULES = \
 	AboutHomeUtils.jsm \
 	BrowserNewTabPreloader.jsm \
 	openLocationLastURL.jsm \
 	NetworkPrioritizer.jsm \
 	offlineAppCache.jsm \
 	SignInToWebsite.jsm \
 	webappsUI.jsm \

new file mode 100644
--- /dev/null
+++ b/browser/modules/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+TEST_DIRS += ['test']
+

--- a/browser/modules/test/Makefile.in
+++ b/browser/modules/test/Makefile.in
@@ -3,20 +3,16 @@
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 relativesrcdir  = @relativesrcdir@
 
-DIRS = \
-	chrome \
-	$(NULL)
-
 include $(DEPTH)/config/autoconf.mk
 
 include $(topsrcdir)/config/rules.mk
 
 _BROWSER_FILES = \
                  browser_NetworkPrioritizer.js \
                  # bug 793906 - temporarily disabling desktop UI while working on b2g
                  # browser_SignInToWebsite.js \

new file mode 100644
--- /dev/null
+++ b/browser/modules/test/chrome/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/modules/test/moz.build
@@ -0,0 +1,6 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['chrome']

new file mode 100644
--- /dev/null
+++ b/browser/moz.build
@@ -0,0 +1,28 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+CONFIGURE_SUBST_FILES += ['installer/Makefile']
+
+PARALLEL_DIRS += [
+    'base',
+    'components',
+    'fuel',
+    'locales',
+    'modules',
+    'themes',
+    'extensions',
+]
+
+DIRS += [
+    'devtools',
+    'app',
+]
+
+if CONFIG['MOZ_METRO']:
+    DIRS += ['metro']
+
+if CONFIG['MAKENSISU']:
+    DIRS += ['installer/windows']
+

--- a/browser/themes/Makefile.in
+++ b/browser/themes/Makefile.in
@@ -4,18 +4,9 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-ifeq (cocoa,$(MOZ_WIDGET_TOOLKIT))
-DIRS = osx
-else
-DIRS = windows
-endif
-ifneq (,$(filter gtk2 qt,$(MOZ_WIDGET_TOOLKIT)))
-DIRS = linux
-endif
-
 include $(topsrcdir)/config/rules.mk

--- a/browser/themes/linux/Makefile.in
+++ b/browser/themes/linux/Makefile.in
@@ -4,15 +4,13 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = communicator
-
 ICON_FILES := icon.png
 ICON_DEST = $(FINAL_TARGET)/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
 INSTALL_TARGETS += ICON
 
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/themes/linux/communicator/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/themes/linux/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['communicator']
+

new file mode 100644
--- /dev/null
+++ b/browser/themes/moz.build
@@ -0,0 +1,14 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+toolkit = CONFIG['MOZ_WIDGET_TOOLKIT']
+
+if toolkit == 'cocoa':
+    DIRS += ['osx']
+elif toolkit in ('gtk2', 'qt'):
+    DIRS += ['linux']
+else:
+    DIRS += ['windows']
+    

--- a/browser/themes/osx/Makefile.in
+++ b/browser/themes/osx/Makefile.in
@@ -4,15 +4,13 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = communicator
-
 ICON_FILES := icon.png
 ICON_DEST = $(FINAL_TARGET)/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
 INSTALL_TARGETS += ICON
 
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/themes/osx/communicator/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/themes/osx/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['communicator']
+

--- a/browser/themes/windows/Makefile.in
+++ b/browser/themes/windows/Makefile.in
@@ -4,15 +4,13 @@
 
 DEPTH		= @DEPTH@
 topsrcdir	= @top_srcdir@
 srcdir		= @srcdir@
 VPATH		= @srcdir@
 
 include $(DEPTH)/config/autoconf.mk
 
-DIRS = communicator
-
 ICON_FILES := icon.png
 ICON_DEST = $(FINAL_TARGET)/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}
 INSTALL_TARGETS += ICON
 
 include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/browser/themes/windows/communicator/moz.build
@@ -0,0 +1,5 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+

new file mode 100644
--- /dev/null
+++ b/browser/themes/windows/moz.build
@@ -0,0 +1,7 @@
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+DIRS += ['communicator']
+