Bug 1026756 - Detect when a scroll offset update is going to remove checkerboarding, and don't leave things in a low-precision state. r=Cwiiis
Bug 1021248 - Update the low-res tiles even when not in risk of checkerboarding. r=Cwiiis
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Bug 1021085 - Refactor code to ensure we use the same scrolling ancestor layer everywhere. r=
Bug 1021085 - Fix up the transform used for the compositor side composition bounds. r=
Bug 1021085 - Remove unnecessary transform stored on the paint data. r=
Bug 1021085 - Fix up the Fennec code path as well. r=