Add way to mark other Surface a predecessor for a Surface.

cc/surfaces/surface_factory.h

Index: cc/surfaces/surface_factory.h
diff --git a/cc/surfaces/surface_factory.h b/cc/surfaces/surface_factory.h
index eee51bf5ddfeabbf3b53f028668897c501b04410..1cb7d6fe0ae6621248cadcc84f8129686fda142f 100644
--- a/cc/surfaces/surface_factory.h
+++ b/cc/surfaces/surface_factory.h
@@ -49,6 +49,10 @@ class CC_SURFACES_EXPORT SurfaceFactory
   void Destroy(SurfaceId surface_id);
   void DestroyAll();
 
+  // Set that the current frame on new_id is to be treated as the successor to
+  // the current frame on old_id for the purposes of calculating damage.
+  void SetPreviousFrameSurface(SurfaceId new_id, SurfaceId old_id);
+
   // A frame can only be submitted to a surface created by this factory,
   // although the frame may reference surfaces created by other factories.
   // The callback is called the first time this frame is used to draw, or if