--- a/dom/ipc/ContentChild.cpp
+++ b/dom/ipc/ContentChild.cpp
@@ -47,38 +47,40 @@
 
 #include "ContentChild.h"
 #include "CrashReporterChild.h"
 #include "TabChild.h"
 #if defined(MOZ_SYDNEYAUDIO)
 #include "AudioChild.h"
 #endif
 
+#include "mozilla/dom/ExternalHelperAppChild.h"
+#include "mozilla/dom/PCrashReporterChild.h"
+#include "mozilla/dom/StorageChild.h"
+#include "mozilla/hal_sandbox/PHalChild.h"
 #include "mozilla/ipc/TestShellChild.h"
-#include "mozilla/net/NeckoChild.h"
 #include "mozilla/ipc/XPCShellEnvironment.h"
 #include "mozilla/jsipc/PContextWrapperChild.h"
-#include "mozilla/dom/ExternalHelperAppChild.h"
-#include "mozilla/dom/StorageChild.h"
-#include "mozilla/dom/PCrashReporterChild.h"
+#include "mozilla/net/NeckoChild.h"
 
 #if defined(MOZ_SYDNEYAUDIO)
 #include "nsAudioStream.h"
 #endif
 #include "nsIMemoryReporter.h"
 #include "nsIObserverService.h"
 #include "nsTObserverArray.h"
 #include "nsIObserver.h"
 #include "nsIPrefService.h"
 #include "nsServiceManagerUtils.h"
 #include "nsXULAppAPI.h"
 #include "nsWeakReference.h"
 #include "nsIScriptError.h"
 #include "nsIConsoleService.h"
 #include "nsJSEnvironment.h"
+#include "SandboxHal.h"
 
 #include "History.h"
 #include "nsDocShellCID.h"
 #include "nsNetUtil.h"
 
 #include "base/message_loop.h"
 #include "base/task.h"
 
@@ -104,16 +106,17 @@
 #include <process.h>
 #define getpid _getpid
 #endif
 
 #ifdef ACCESSIBILITY
 #include "nsIAccessibilityService.h"
 #endif
 
+using namespace mozilla::hal_sandbox;
 using namespace mozilla::ipc;
 using namespace mozilla::net;
 using namespace mozilla::places;
 using namespace mozilla::docshell;
 
 namespace mozilla {
 namespace dom {
 
@@ -435,16 +438,29 @@ ContentChild::AllocPCrashReporter(const 
 
 bool
 ContentChild::DeallocPCrashReporter(PCrashReporterChild* crashreporter)
 {
     delete crashreporter;
     return true;
 }
 
+PHalChild*
+ContentChild::AllocPHal()
+{
+    return CreateHalChild();
+}
+
+bool
+ContentChild::DeallocPHal(PHalChild* aHal)
+{
+    delete aHal;
+    return true;
+}
+
 PTestShellChild*
 ContentChild::AllocPTestShell()
 {
     return new TestShellChild();
 }
 
 bool
 ContentChild::DeallocPTestShell(PTestShellChild* shell)

--- a/dom/ipc/ContentChild.h
+++ b/dom/ipc/ContentChild.h
@@ -91,16 +91,19 @@ public:
     virtual bool DeallocPBrowser(PBrowserChild*);
 
     virtual PCrashReporterChild*
     AllocPCrashReporter(const mozilla::dom::NativeThreadId& id,
                         const PRUint32& processType);
     virtual bool
     DeallocPCrashReporter(PCrashReporterChild*);
 
+    NS_OVERRIDE virtual PHalChild* AllocPHal();
+    NS_OVERRIDE virtual bool DeallocPHal(PHalChild*);
+
     virtual PMemoryReportRequestChild*
     AllocPMemoryReportRequest();
 
     virtual bool
     DeallocPMemoryReportRequest(PMemoryReportRequestChild* actor);
 
     virtual bool
     RecvPMemoryReportRequestConstructor(PMemoryReportRequestChild* child);

--- a/dom/ipc/ContentParent.cpp
+++ b/dom/ipc/ContentParent.cpp
@@ -71,16 +71,17 @@
 #include "nsIScriptError.h"
 #include "nsConsoleMessage.h"
 #include "nsAppDirectoryServiceDefs.h"
 #include "nsAppRunner.h"
 #include "IDBFactory.h"
 #if defined(MOZ_SYDNEYAUDIO)
 #include "AudioParent.h"
 #endif
+#include "SandboxHal.h"
 
 #if defined(ANDROID) || defined(LINUX)
 #include <sys/time.h>
 #include <sys/resource.h>
 #include "nsSystemInfo.h"
 #endif
 
 #ifdef MOZ_PERMISSIONS
@@ -89,16 +90,17 @@
 
 #ifdef MOZ_CRASHREPORTER
 #include "nsICrashReporter.h"
 #include "nsExceptionHandler.h"
 #endif
 
 #include "mozilla/dom/ExternalHelperAppParent.h"
 #include "mozilla/dom/StorageParent.h"
+#include "mozilla/hal_sandbox/PHalParent.h"
 #include "mozilla/Services.h"
 #include "mozilla/unused.h"
 #include "nsDeviceMotion.h"
 #include "mozilla/Util.h"
 
 #include "nsIMemoryReporter.h"
 #include "nsMemoryReporterManager.h"
 #include "mozilla/dom/PMemoryReportRequestParent.h"
@@ -111,16 +113,17 @@
 #include "nsIClipboard.h"
 #include "nsWidgetsCID.h"
 #include "nsISupportsPrimitives.h"
 static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID);
 static const char* sClipboardTextFlavors[] = { kUnicodeMime };
 
 using mozilla::Preferences;
 using namespace mozilla::ipc;
+using namespace mozilla::hal_sandbox;
 using namespace mozilla::net;
 using namespace mozilla::places;
 using mozilla::unused; // heh
 using base::KillProcess;
 
 namespace mozilla {
 namespace dom {
 
@@ -815,16 +818,29 @@ ContentParent::RecvPCrashReporterConstru
 
 bool
 ContentParent::DeallocPCrashReporter(PCrashReporterParent* crashreporter)
 {
   delete crashreporter;
   return true;
 }
 
+PHalParent*
+ContentParent::AllocPHal()
+{
+    return CreateHalParent();
+}
+
+bool
+ContentParent::DeallocPHal(PHalParent* aHal)
+{
+    delete aHal;
+    return true;
+}
+
 PMemoryReportRequestParent*
 ContentParent::AllocPMemoryReportRequest()
 {
   MemoryReportRequestParent* parent = new MemoryReportRequestParent();
   return parent;
 }
 
 bool

--- a/dom/ipc/ContentParent.h
+++ b/dom/ipc/ContentParent.h
@@ -130,16 +130,19 @@ private:
 
     virtual PCrashReporterParent* AllocPCrashReporter(const NativeThreadId& tid,
                                                       const PRUint32& processType);
     virtual bool DeallocPCrashReporter(PCrashReporterParent* crashreporter);
     virtual bool RecvPCrashReporterConstructor(PCrashReporterParent* actor,
                                                const NativeThreadId& tid,
                                                const PRUint32& processType);
 
+    NS_OVERRIDE virtual PHalParent* AllocPHal();
+    NS_OVERRIDE virtual bool DeallocPHal(PHalParent*);
+
     virtual PMemoryReportRequestParent* AllocPMemoryReportRequest();
     virtual bool DeallocPMemoryReportRequest(PMemoryReportRequestParent* actor);
 
     virtual PTestShellParent* AllocPTestShell();
     virtual bool DeallocPTestShell(PTestShellParent* shell);
 
     virtual PAudioParent* AllocPAudio(const PRInt32&,
                                      const PRInt32&,

--- a/dom/ipc/Makefile.in
+++ b/dom/ipc/Makefile.in
@@ -103,16 +103,17 @@ LOCAL_INCLUDES += \
 	-I$(srcdir)/../../netwerk/base/src \
 	-I$(srcdir)/../src/base \
 	-I$(srcdir)/../src/storage \
 	-I$(srcdir)/../../xpcom/base \
 	-I$(srcdir)/../indexedDB \
 	-I$(topsrcdir)/extensions/cookie \
 	-I$(topsrcdir)/dom/base \
 	-I$(topsrcdir)/toolkit/xre \
+	-I$(topsrcdir)/hal/sandbox \
 	$(NULL)
 
 DEFINES += -DBIN_SUFFIX='"$(BIN_SUFFIX)"'
 
 ifdef MOZ_PERMISSIONS
 DEFINES += -DMOZ_PERMISSIONS
 endif
 

--- a/dom/ipc/PContent.ipdl
+++ b/dom/ipc/PContent.ipdl
@@ -34,21 +34,22 @@
  * the provisions above, a recipient may use your version of this file under
  * the terms of any one of the MPL, the GPL or the LGPL.
  *
  * ***** END LICENSE BLOCK ***** */
 
 include protocol PAudio;
 include protocol PBrowser;
 include protocol PCrashReporter;
-include protocol PTestShell;
+include protocol PExternalHelperApp;
+include protocol PHal;
+include protocol PMemoryReportRequest;
 include protocol PNecko;
-include protocol PExternalHelperApp;
 include protocol PStorage;
-include protocol PMemoryReportRequest;
+include protocol PTestShell;
 
 include "mozilla/chrome/RegistryMessageUtils.h";
 include "mozilla/net/NeckoMessageUtils.h";
 include "mozilla/dom/TabMessageUtils.h";
 
 include "nsGeoPositionIPCSerialiser.h";
 include "PPrefTuple.h";
 
@@ -94,21 +95,22 @@ struct FontListEntry {
     PRUint8   index;
 };
 
 rpc protocol PContent
 {
     manages PAudio;
     manages PBrowser;
     manages PCrashReporter;
-    manages PTestShell;
+    manages PExternalHelperApp;
+    manages PHal;
+    manages PMemoryReportRequest;
     manages PNecko;
-    manages PExternalHelperApp;
     manages PStorage;
-    manages PMemoryReportRequest;
+    manages PTestShell;
 
 child:
     PBrowser(PRUint32 chromeFlags);
 
     PMemoryReportRequest();
 
     PTestShell();
 
@@ -141,24 +143,26 @@ child:
     /**
      * Start accessibility engine in content process.
      */
     ActivateA11y();
 
     AppInfo(nsCString version, nsCString buildID);
 
 parent:
+    PAudio(PRInt32 aNumChannels, PRInt32 aRate, PRInt32 aFormat);
+
+    sync PCrashReporter(NativeThreadId tid, PRUint32 processType);
+
+    PHal();
+
     PNecko();
     
     PStorage(StorageConstructData data);
 
-    PAudio(PRInt32 aNumChannels, PRInt32 aRate, PRInt32 aFormat);
-
-    sync PCrashReporter(NativeThreadId tid, PRUint32 processType);
-
     // Services remoting
 
     async StartVisitedQuery(URI uri);
     async VisitURI(URI uri, URI referrer, PRUint32 flags);
     async SetURITitle(URI uri, nsString title);
     
     // filepicker remoting
     sync ShowFilePicker(PRInt16 mode, PRInt16 selectedType, bool addToRecentDocs,

new file mode 100644
--- /dev/null
+++ b/hal/Hal.cpp
@@ -0,0 +1,77 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "Hal.h"
+#include "mozilla/Util.h"
+#include "nsThreadUtils.h"
+#include "nsXULAppAPI.h"
+
+#define PROXY_IF_SANDBOXED(_call)                 \
+  do {                                            \
+    if (InSandbox()) {                            \
+      hal_sandbox::_call;                         \
+    } else {                                      \
+      hal_impl::_call;                            \
+    }                                             \
+  } while (0)
+
+namespace mozilla {
+namespace hal {
+
+static void
+AssertMainThread()
+{
+  MOZ_ASSERT(NS_IsMainThread());
+}
+
+static bool
+InSandbox()
+{
+  return GeckoProcessType_Content == XRE_GetProcessType();
+}
+
+void
+Vibrate(const nsTArray<uint32>& pattern)
+{
+  AssertMainThread();
+  PROXY_IF_SANDBOXED(Vibrate(pattern));
+}
+
+} // namespace hal
+} // namespace mozilla

new file mode 100644
--- /dev/null
+++ b/hal/Hal.h
@@ -0,0 +1,86 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef mozilla_Hal_h
+#define mozilla_Hal_h 1
+
+#include "base/basictypes.h"
+#include "mozilla/Types.h"
+#include "nsTArray.h"
+
+#ifndef MOZ_HAL_NAMESPACE
+// This goop plays some cpp tricks to ensure a uniform API across the
+// API entry point, "sandbox" implementations (for content processes),
+// and "impl" backends where the real work happens.  After this runs
+// through cpp, there will be three sets of identical APIs
+//   hal_impl:: --- the platform-specific implementation of an API.
+//   hal_sandbox:: --- forwards calls up to the parent process
+//   hal:: --- invokes sandboxed impl if in a sandboxed process,
+//             otherwise forwards to hal_impl
+//
+// External code should never invoke hal_impl:: or hal_sandbox:: code
+// directly.
+# include "HalImpl.h"
+# include "HalSandbox.h"
+# define MOZ_HAL_NAMESPACE hal
+# define MOZ_DEFINED_HAL_NAMESPACE 1
+#endif
+
+namespace mozilla {
+namespace MOZ_HAL_NAMESPACE /*hal*/ {
+
+/**
+ * Turn the default vibrator device on/off per the pattern specified
+ * by |pattern|.  Each element in the pattern is the number of
+ * milliseconds to turn the vibrator on or off.  The first element in
+ * |pattern| is an "on" element, the next is "off", and so on.
+ *
+ * If |pattern| is empty, any in-progress vibration is canceled.
+ */
+void Vibrate(const nsTArray<uint32>& pattern);
+
+}
+}
+
+#ifdef MOZ_DEFINED_HAL_NAMESPACE
+# undef MOZ_DEFINED_HAL_NAMESPACE
+# undef MOZ_HAL_NAMESPACE
+#endif
+
+#endif  // mozilla_Hal_h

new file mode 100644
--- /dev/null
+++ b/hal/HalImpl.h
@@ -0,0 +1,48 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef mozilla_Hal_h
+# error "This is an internal file, don't include it"
+#endif
+
+#undef mozilla_Hal_h
+#define MOZ_HAL_NAMESPACE hal_impl
+#include "Hal.h"
+#undef MOZ_HAL_NAMESPACE
+

new file mode 100644
--- /dev/null
+++ b/hal/HalSandbox.h
@@ -0,0 +1,47 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef mozilla_Hal_h
+# error "This is an internal file, don't include it"
+#endif
+
+#undef mozilla_Hal_h
+#define MOZ_HAL_NAMESPACE hal_sandbox
+#include "Hal.h"
+#undef MOZ_HAL_NAMESPACE

new file mode 100644
--- /dev/null
+++ b/hal/Makefile.in
@@ -0,0 +1,71 @@
+#
+# ***** BEGIN LICENSE BLOCK *****
+# Version: MPL 1.1/GPL 2.0/LGPL 2.1
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Original Code is Mozilla Corporation code.
+#
+# The Initial Developer of the Original Code is Mozilla Foundation.
+# Portions created by the Initial Developer are Copyright (C) 2011
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#   Chris Jones <jones.chris.g@gmail.com>
+#
+# Alternatively, the contents of this file may be used under the terms of
+# either of the GNU General Public License Version 2 or later (the "GPL"),
+# or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+# in which case the provisions of the GPL or the LGPL are applicable instead
+# of those above. If you wish to allow use of your version of this file only
+# under the terms of either the GPL or the LGPL, and not to allow others to
+# use your version of this file under the terms of the MPL, indicate your
+# decision by deleting the provisions above and replace them with the notice
+# and other provisions required by the GPL or the LGPL. If you do not delete
+# the provisions above, a recipient may use your version of this file under
+# the terms of any one of the MPL, the GPL or the LGPL.
+#
+# ***** END LICENSE BLOCK *****
+
+DEPTH       = ..
+topsrcdir   = @top_srcdir@
+srcdir      = @srcdir@
+VPATH       = \
+  $(srcdir) \
+  $(srcdir)/fallback \
+  $(srcdir)/sandbox \
+  $(NULL)
+
+include $(DEPTH)/config/autoconf.mk
+
+MODULE         = hal
+LIBRARY_NAME   = hal_s
+FORCE_STATIC_LIB = 1
+LIBXUL_LIBRARY = 1
+EXPORT_LIBRARY = 1
+
+EXPORTS_NAMESPACES = mozilla
+EXPORTS_mozilla = \
+  Hal.h \
+  HalImpl.h \
+  HalSandbox.h \
+  $(NULL)
+
+CPPSRCS = \
+  Hal.cpp \
+  SandboxHal.cpp \
+  $(NULL)
+
+CPPSRCS += FallbackHal.cpp
+
+include $(topsrcdir)/config/config.mk
+include $(topsrcdir)/ipc/chromium/chromium-config.mk
+include $(topsrcdir)/config/rules.mk

new file mode 100644
--- /dev/null
+++ b/hal/fallback/FallbackHal.cpp
@@ -0,0 +1,50 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "Hal.h"
+
+namespace mozilla {
+namespace hal_impl {
+
+void
+Vibrate(const nsTArray<uint32>& pattern)
+{}
+
+} // hal_impl
+} // namespace mozilla

new file mode 100644
--- /dev/null
+++ b/hal/sandbox/PHal.ipdl
@@ -0,0 +1,55 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+include protocol PContent;
+
+namespace mozilla {
+namespace hal_sandbox {
+
+protocol PHal {
+    manager PContent;
+
+parent:
+    Vibrate(uint32[] pattern);
+
+    __delete__();
+};
+
+} // namespace hal
+} // namespace mozilla

new file mode 100644
--- /dev/null
+++ b/hal/sandbox/SandboxHal.cpp
@@ -0,0 +1,94 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "Hal.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/hal_sandbox/PHalChild.h"
+#include "mozilla/hal_sandbox/PHalParent.h"
+
+using namespace mozilla;
+using namespace mozilla::dom;
+using namespace mozilla::hal;
+
+namespace mozilla {
+namespace hal_sandbox {
+
+static PHalChild* sHal;
+static PHalChild*
+Hal()
+{
+  if (!sHal) {
+    sHal = ContentChild::GetSingleton()->SendPHalConstructor();
+  }
+  return sHal;
+}
+
+void
+Vibrate(const nsTArray<uint32>& pattern)
+{
+  AutoInfallibleTArray<uint32, 8> p(pattern);
+  Hal()->SendVibrate(p);
+}
+
+class HalParent : public PHalParent {
+public:
+  NS_OVERRIDE virtual bool
+  RecvVibrate(const InfallibleTArray<unsigned int>& pattern) {
+    // Forward to hal::, not hal_impl::, because we might be a
+    // subprocess of another sandboxed process.  The hal:: entry point
+    // will do the right thing.
+    hal::Vibrate(pattern);
+    return true;
+  }
+};
+
+class HalChild : public PHalChild {
+public:
+};
+
+PHalChild* CreateHalChild() {
+  return new HalChild();
+}
+
+PHalParent* CreateHalParent() {
+  return new HalParent();
+}
+
+} // namespace hal_sandbox
+} // namespace mozilla

new file mode 100644
--- /dev/null
+++ b/hal/sandbox/SandboxHal.h
@@ -0,0 +1,56 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: sw=2 ts=8 et ft=cpp : */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at:
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Code.
+ *
+ * The Initial Developer of the Original Code is
+ *   The Mozilla Foundation
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Chris Jones <jones.chris.g@gmail.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#ifndef mozilla_SandboxHal_h
+#define mozilla_SandboxHal_h
+
+namespace mozilla {
+namespace hal_sandbox {
+
+class PHalChild;
+class PHalParent;
+
+PHalChild* CreateHalChild();
+
+PHalParent* CreateHalParent();
+
+}
+}
+
+#endif  // mozilla_SandboxHal_h

new file mode 100644
--- /dev/null
+++ b/hal/sandbox/ipdl.mk
@@ -0,0 +1,39 @@
+# ***** BEGIN LICENSE BLOCK *****
+# Version: MPL 1.1/GPL 2.0/LGPL 2.1
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Original Code is Mozilla Content App.
+#
+# The Initial Developer of the Original Code is
+#   The Mozilla Foundation.
+# Portions created by the Initial Developer are Copyright (C) 2011
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#
+# Alternatively, the contents of this file may be used under the terms of
+# either the GNU General Public License Version 2 or later (the "GPL"), or
+# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+# in which case the provisions of the GPL or the LGPL are applicable instead
+# of those above. If you wish to allow use of your version of this file only
+# under the terms of either the GPL or the LGPL, and not to allow others to
+# use your version of this file under the terms of the MPL, indicate your
+# decision by deleting the provisions above and replace them with the notice
+# and other provisions required by the GPL or the LGPL. If you do not delete
+# the provisions above, a recipient may use your version of this file under
+# the terms of any one of the MPL, the GPL or the LGPL.
+#
+# ***** END LICENSE BLOCK *****
+
+IPDLSRCS = \
+  PHal.ipdl \
+  $(NULL)

--- a/ipc/ipdl/Makefile.in
+++ b/ipc/ipdl/Makefile.in
@@ -54,16 +54,17 @@ EXPORT_LIBRARY = 1
 ## When you add IPDL files to a source directory, list the directory here.
 ##
 IPDLDIRS =  \
   uriloader/exthandler \
   dom/plugins/ipc  \
   dom/ipc  \
   dom/src/storage \
   gfx/layers/ipc \
+  hal/sandbox \
   ipc/testshell  \
   js/ipc  \
   js/jetpack \
   layout/ipc \
   netwerk/ipc  \
   netwerk/protocol/ftp \
   netwerk/protocol/http  \
   netwerk/protocol/wyciwyg \

--- a/toolkit/library/libxul-config.mk
+++ b/toolkit/library/libxul-config.mk
@@ -91,16 +91,17 @@ STATIC_LIBS += \
   jsipc_s \
   domipc_s \
   domplugins_s \
   mozipc_s \
   mozipdlgen_s \
   ipcshell_s \
   gfx2d \
   gfxipc_s \
+  hal_s \
   $(NULL)
 
 ifdef MOZ_IPDL_TESTS
 STATIC_LIBS += ipdlunittest_s
 endif
 
 ifeq (Linux,$(OS_ARCH))
 ifneq (Android,$(OS_TARGET))

--- a/toolkit/toolkit-makefiles.sh
+++ b/toolkit/toolkit-makefiles.sh
@@ -729,16 +729,20 @@ MAKEFILES_extensions="
   extensions/pref/autoconfig/public/Makefile
   extensions/pref/autoconfig/src/Makefile
 "
 
 MAKEFILES_startupcache="
   startupcache/Makefile
 "
 
+MAKEFILES_hal="
+  hal/Makefile
+"
+
 add_makefiles "
   $MAKEFILES_db
   $MAKEFILES_dom
   $MAKEFILES_editor
   $MAKEFILES_xmlparser
   $MAKEFILES_gfx
   $MAKEFILES_htmlparser
   $MAKEFILES_intl
@@ -770,16 +774,17 @@ add_makefiles "
   $MAKEFILES_xpfe
   $MAKEFILES_embedding
   $MAKEFILES_xulapp
   $MAKEFILES_libpr0n
   $MAKEFILES_accessible
   $MAKEFILES_libmar
   $MAKEFILES_extensions
   $MAKEFILES_startupcache
+  $MAKEFILES_hal
 "
 
 #
 # Conditional makefiles
 #
 
 if [ "$ENABLE_TESTS" ]; then
   add_makefiles "

--- a/toolkit/toolkit-tiers.mk
+++ b/toolkit/toolkit-tiers.mk
@@ -89,16 +89,17 @@ tier_platform_dirs	+= gfx/qcms
 
 #
 # "gecko" - core components
 #
 
 tier_platform_dirs += ipc js/ipc js/jetpack
 
 tier_platform_dirs += \
+		hal \
 		js/src/xpconnect \
 		intl/chardet \
 		$(NULL)
 
 ifdef MOZ_ENABLE_GTK2
 ifdef MOZ_X11
 tier_platform_dirs     += widget/src/gtkxtbin
 endif