[chromium] Use WebGraphicsContext3D in rate limiting logic inside compositor
Created attachment 141511 [details] Patch
FYI https://bugs.webkit.org/show_bug.cgi?id=86273 is the next step in the progression. I'll do the same thing for canvas 2d once https://bugs.webkit.org/show_bug.cgi?id=86050 lands. At that point there won't be anything using TextureLayerChromium directly except for the implementation of WebExternalTextureLayer.
Created attachment 146416 [details] Patch
Rebased to ToT.
Comment on attachment 146416 [details] Patch R=me.
Committed r120016: <http://trac.webkit.org/changeset/120016>