Bug 851627 - Make LifoAlloc::release run in O(1) (r=sstangl)
Bug 859377 (Part 1) - Add imgIContainer::GetFrameIndex. r=joe sr=bz

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extra : rebase_source : e81992f8bead31b273f4afb4fb589849ec1c5218
Bug 859377 (Part 2) - Make SVGImageContext more flexible. r=dholbert

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extra : rebase_source : 79a4380691426c128f334ba066167a5c5b8ee801
Bug 859377 (Part 3) - Make ClippedImage cache temporary surfaces. r=joe

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extra : rebase_source : 060615904e1b416f84b4d6ecf6329841896f13da