Run smooth scroll animations on the compositor when possible

cc/blink/web_compositor_animation_player_impl.cc

Index: cc/blink/web_compositor_animation_player_impl.cc
diff --git a/cc/blink/web_compositor_animation_player_impl.cc b/cc/blink/web_compositor_animation_player_impl.cc
index fd146de856fc4ae3d0d41c969ce9bcc23aaa1282..f0855c846e7e95763c1a69fa05c512697345be52 100644
--- a/cc/blink/web_compositor_animation_player_impl.cc
+++ b/cc/blink/web_compositor_animation_player_impl.cc
@@ -63,4 +63,8 @@ void WebCompositorAnimationPlayerImpl::pauseAnimation(int animation_id,
   animation_player_->PauseAnimation(animation_id, time_offset);
 }
 
+void WebCompositorAnimationPlayerImpl::abortAnimation(int animation_id) {
+  animation_player_->AbortAnimation(animation_id);
+}
+
 }  // namespace cc_blink