Share animations from compositor to main thread.

cc/animation/animation_delegate.h

Index: cc/animation/animation_delegate.h
diff --git a/cc/animation/animation_delegate.h b/cc/animation/animation_delegate.h
index 732e6937ff7221ef028eca23888cb60f2bc87b3b..e571800cfaa7ac59a11202dd8b1c8b9f347e356d 100644
--- a/cc/animation/animation_delegate.h
+++ b/cc/animation/animation_delegate.h
@@ -7,6 +7,7 @@
 
 #include "base/time/time.h"
 #include "cc/animation/animation.h"
+#include "cc/animation/animation_curve.h"
 
 namespace cc {
 
@@ -23,6 +24,10 @@ class CC_EXPORT AnimationDelegate {
                                       TargetProperty::Type target_property,
                                       int group) = 0;
 
+  virtual void NotifyAnimationTakeover(base::TimeTicks monotonic_time,
+                                       double animation_start_time,

[ajuma, 2016/02/26 23:56:54]

This should include a target property (even if we happen to only be using it for
scroll animations right now).

[ymalik, 2016/02/29 16:31:09]

Totally. Done thanks!

+                                       scoped_ptr<AnimationCurve> curve) = 0;
+
  protected:
   virtual ~AnimationDelegate() {}
 };