Add overscroll edge effect animations for Android.

content/browser/android/content_view_core_impl.h

Index: content/browser/android/content_view_core_impl.h
diff --git a/content/browser/android/content_view_core_impl.h b/content/browser/android/content_view_core_impl.h
index 0c311a63eb682d8597127e1662df336f88afcb40..e4c9547c198f6ac3f178996040a2b2ad0d8875b4 100644
--- a/content/browser/android/content_view_core_impl.h
+++ b/content/browser/android/content_view_core_impl.h
@@ -199,6 +199,7 @@ class ContentViewCoreImpl : public ContentViewCore,
   void UpdateVSyncParameters(JNIEnv* env, jobject obj, jlong timebase_micros,
                              jlong interval_micros);
   void OnVSync(JNIEnv* env, jobject /* obj */, jlong frame_time_micros);
+  jboolean Animate(JNIEnv* env, jobject /* obj */, jlong frame_time_micros);

[no sievers, 2013/05/13 18:38:24]

Hmm, why 'frame_time_micros'? Maybe just 'monotonic_time' or something?

[jdduke (slow), 2013/05/13 20:44:24]

This was primarily for consistency with the *VSync calls  above; the time
sources are the same. 

   jboolean PopulateBitmapFromCompositor(JNIEnv* env,
                                         jobject obj,
                                         jobject jbitmap);
@@ -296,6 +297,7 @@ class ContentViewCoreImpl : public ContentViewCore,
   void AttachLayer(scoped_refptr<cc::Layer> layer);
   void RemoveLayer(scoped_refptr<cc::Layer> layer);
   void SetVSyncNotificationEnabled(bool enabled);
+  void SetNeedsAnimate();
 
  private:
   enum InputEventVSyncStatus {