b=623380 destroy XtClient child window on unrealize r=stransky
b=826158 remove unnecessary GtkTargetEntry::info code r=ebassi
b=609784 rename DBus Notifications nsAlertsService to resolve collision with XP service r=roc

--HG--
rename : toolkit/system/gnome/nsAlertsService.cpp => toolkit/system/gnome/nsSystemAlertsService.cpp
rename : toolkit/system/gnome/nsAlertsService.h => toolkit/system/gnome/nsSystemAlertsService.h
b=842468 use scrollbar pref thickness instead of min for resizer size r=roc
b=842468 include border in scrollbar track min size r=roc
b=788935 remove unused no-op virtual GLContext::WindowDestroyed() r=vlad
CLOSED TREE
Bug 833724 - Use actual playback position to calculate free buffer space and change start-after-write logic in sydneyaudio Gonk backend. r=mchen

--HG--
extra : rebase_source : c9cb0ea2264713facc0d7c27e16342eb13d9751a