backout bug 755070

embedding/android/GeckoEvent.java

ipc/chromium/src/base/message_loop.cc

ipc/chromium/src/base/message_loop.h

mobile/android/base/GeckoApp.java

mobile/android/base/GeckoAppShell.java

mobile/android/base/GeckoEvent.java

mobile/android/base/Tab.java

mobile/android/base/Tabs.java

mobile/android/base/gfx/IntSize.java

mobile/android/base/gfx/LayerRenderer.java

mobile/android/base/gfx/ScreenshotLayer.java

widget/android/AndroidBridge.cpp

widget/android/AndroidBridge.h

widget/android/AndroidJavaWrappers.cpp

widget/android/AndroidJavaWrappers.h

widget/android/nsAppShell.cpp