Web Animations CSS: Start running animations on the compositor

Source/core/animation/CompositorAnimations.h

Index: Source/core/animation/CompositorAnimations.h
diff --git a/Source/core/animation/CompositorAnimations.h b/Source/core/animation/CompositorAnimations.h
index ff41163cf056244709117cc68f10839aaf2f4e42..beafe2043180c115d244a1c68ea11b67c72882f3 100644
--- a/Source/core/animation/CompositorAnimations.h
+++ b/Source/core/animation/CompositorAnimations.h
@@ -60,7 +60,8 @@ public:
 
     virtual bool isCandidateForCompositorAnimation(const Timing&, const AnimationEffect&);
     virtual bool canStartCompositorAnimation(const Element&);
-    virtual void startCompositorAnimation(const Element&, const Timing&, const AnimationEffect&, Vector<int>& startedAnimationIds);
+    // FIXME: This should return void. We should know ahead of time whether these animations can be started.
+    virtual bool startCompositorAnimation(const Element&, const Timing&, const AnimationEffect&, Vector<int>& startedAnimationIds);

[shans, 2013/11/18 01:02:06]

Plus One. Should this FIXME be in Animation.h too?

[dstockwell, 2013/11/18 05:30:34]

I think it's fine to just have it here, if this is changed it will propagate
back up as necessary.

     virtual void cancelCompositorAnimation(const Element&, int id);
 
 protected: