--- a/mail/locales/filter.py
+++ b/mail/locales/filter.py
@@ -1,13 +1,13 @@
 def test(mod, path, entity=None):
   import re
   # ignore anything but Thunderbird
   if mod not in ("netwerk", "dom", "toolkit", "security/manager",
-                 "devtools/shared",
+                 "devtools/shared", "devtools/client",
                  "mail", "chat", "editor/ui", "extensions/spellcheck",
                  "other-licenses/branding/thunderbird"):
     return "ignore"
 
   # ignore MOZ_LANGPACK_CONTRIBUTORS
   if mod == "mail" and path == "defines.inc" and \
      entity == "MOZ_LANGPACK_CONTRIBUTORS":
     return "ignore"

--- a/mail/locales/l10n-aurora.ini
+++ b/mail/locales/l10n-aurora.ini
@@ -7,14 +7,21 @@ dirs = mail
     chat
     other-licenses/branding/thunderbird
     editor/ui
 
 [includes]
 # non-central apps might want to use %(topsrcdir)s here, or other vars
 # RFE: that needs to be supported by compare-locales, too, though
 toolkit = mozilla/toolkit/locales/l10n.ini
+devtools_client = mozilla/devtools/client/locales/l10n.ini
 
 [include_toolkit]
 type = hg
 mozilla = releases/mozilla-aurora
 repo = http://hg.mozilla.org/
 l10n.ini = toolkit/locales/l10n.ini
+
+[include_devtools_client]
+type = hg
+mozilla = releases/mozilla-aurora
+repo = http://hg.mozilla.org/
+l10n.ini = devtools/client/locales/l10n.ini

--- a/mail/locales/l10n-beta.ini
+++ b/mail/locales/l10n-beta.ini
@@ -7,14 +7,21 @@ dirs = mail
     chat
     other-licenses/branding/thunderbird
     editor/ui
 
 [includes]
 # non-central apps might want to use %(topsrcdir)s here, or other vars
 # RFE: that needs to be supported by compare-locales, too, though
 toolkit = mozilla/toolkit/locales/l10n.ini
+devtools_client = mozilla/devtools/client/locales/l10n.ini
 
 [include_toolkit]
 type = hg
 mozilla = releases/mozilla-beta
 repo = http://hg.mozilla.org/
 l10n.ini = toolkit/locales/l10n.ini
+
+[include_devtools_client]
+type = hg
+mozilla = releases/mozilla-beta
+repo = http://hg.mozilla.org/
+l10n.ini = devtools/client/locales/l10n.ini

--- a/mail/locales/l10n-central.ini
+++ b/mail/locales/l10n-central.ini
@@ -7,14 +7,21 @@ dirs = mail
     chat
     other-licenses/branding/thunderbird
     editor/ui
 
 [includes]
 # non-central apps might want to use %(topsrcdir)s here, or other vars
 # RFE: that needs to be supported by compare-locales, too, though
 toolkit = mozilla/toolkit/locales/l10n.ini
+devtools_client = mozilla/devtools/client/locales/l10n.ini
 
 [include_toolkit]
 type = hg
 mozilla = mozilla-central
 repo = http://hg.mozilla.org/
 l10n.ini = toolkit/locales/l10n.ini
+
+[include_devtools_client]
+type = hg
+mozilla = mozilla-central
+repo = http://hg.mozilla.org/
+l10n.ini = devtools/client/locales/l10n.ini

--- a/mail/locales/l10n.ini
+++ b/mail/locales/l10n.ini
@@ -8,8 +8,9 @@ dirs = mail
     other-licenses/branding/thunderbird
     editor/ui
 
 [includes]
 # include toolkit from mozilla.
 # Don't specify which, use l10n-central.ini and friends if you're
 # not working on a local check-out
 toolkit = mozilla/toolkit/locales/l10n.ini
+devtools_client = mozilla/devtools/client/locales/l10n.ini