Backed out changeset ccdc2beb09ae (bug 865929) for mochitest and crashtest crashes.
CLOSED TREE
Bug 634839 (part 1) - Remove unnecessary headers (as found by include-what-you-use) from js/src/jsfoo.cpp files.  r=luke.
Bug 855966 - Warn more harshly about test_interfaces. r+sr=bz
Bug 865940.  Remove AsMutable now that our binding stack variables aren't const.  r=bholley
Bug 857555.  Make window.content return an existing named frame with that name if there is one.  r=bholley
Bug 865249 - Wrap GetSingleton in a MainThread event. r=jdm