Backed out changeset 3332e2f1ede3 due to missing Australis in commit message.
Backed out changeset c083d7a68fd2 due to missing Australis in commit message.
Bug 944114 [Australis] follow-up - pass MouseEvent.button instead of the MouseEvent to _countMouseUpEvent. r=me.
Bug 901207 - [Australis] Cmd/Ctrl+K should open menu panel when search bar was moved there. r=Gijs DONTBUILD