Bug 875157 (part 1) - add isParentWindowMainWidgetVisible to nsIDOMWindowUtils.  r=bz

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extra : rebase_source : ba752abd8c16276e438d3af0742a9d74897acad0
Bug 875157 (part 2) - prevent background thumbnails from displaying alerts/dialogs.  r=adw

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extra : rebase_source : 972af12f9f6b35186826d6087df1e3d54a768367
Bug 880578 - Fix updating of scroll position; r=BenWa
Bug 880932 - Fixed lack of response to APZC paint requests; r=BenWa
All paint requests get tagged with the current nsPresShellId. TabChild will
always trigger a response so APZC doesn't get left hanging.
Bug 880816 - Allow the store buffer to store and mark whole IonCodes; r=billm

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extra : rebase_source : 91f13fe33baecd74051126136060977e209bda22
Bug 880816 - Mark IonCode embedded pointers during MinorGC if they may be Nursery things; r=bhackett

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extra : rebase_source : 2c2e6320671e38fde041fcb350730e6bd7f86f8e
Bug 882948 - Add widget level support for AeroLite for Winodws Server 2012/2013; r=roc
Bug 882948 follow-up: Also implement the -moz-windows-theme: aero-lite media query
Bug 873149 - Report the slowest test in mochitest. r=ted