Change WebLayer::addAnimation to transfer ownership of WebAnimation.

public/platform/WebLayer.h

Index: public/platform/WebLayer.h
diff --git a/public/platform/WebLayer.h b/public/platform/WebLayer.h
index dd84083d215b141f253b11a6c574622eb7ab8437..e467c14f304d485f985fde99e323c0be40c3aee5 100644
--- a/public/platform/WebLayer.h
+++ b/public/platform/WebLayer.h
@@ -143,6 +143,8 @@ public:
     virtual void setAnimationDelegate(WebAnimationDelegate*) = 0;
 
     // Returns false if the animation cannot be added.
+    // After it, the given WebAnimation object is invalid because it passes
+    // the ownership of internal structure of WebAnimation to Chromium.

[jamesr, 2013/09/20 18:52:14]

I would simplify this to "The WebLayer takes ownership of the WebAnimation"

[dshwang, 2013/09/20 19:03:58]

It is because now we does pass ownership of the WebAnimation. we pass just
ownership of cc::Animation that is member of WebAnimation.

     virtual bool addAnimation(WebAnimation*) = 0;
 
     // Removes all animations with the given id.