Bug 849399. Adjust test timeouts to account for newly correct behaviour in nsTransitionManager.cpp. r=dbaron
Bug 849399. Invalidate existing style rule if we start a transition. r=dbaron
Bug 880075. Move def of pts in one scope since it is no longer used in the if statement and add comment; r=dbaron
Bug 875157 (part 1) - add isParentWindowMainWidgetVisible to nsIDOMWindowUtils.  r=bz
Bug 875157 (part 2) - prevent background thumbnails from displaying alerts/dialogs.  r=adw