cc: Use sublayer scale from effect tree (1)

cc/trees/clip_node.h

Index: cc/trees/clip_node.h
diff --git a/cc/trees/clip_node.h b/cc/trees/clip_node.h
index 289930be06ecab91b627957040e8abdc3c5b2034..e9dfede834202526d866c5baa6452387d16163c3 100644
--- a/cc/trees/clip_node.h
+++ b/cc/trees/clip_node.h
@@ -49,7 +49,10 @@ struct CC_EXPORT ClipNode {
   int transform_id;
 
   // The id of the transform node that defines the clip node's target space.
-  int target_id;
+  int target_transform_id;
+
+  // The id of the effect node that defines the clip node's target space.
+  int target_effect_id;
 
   // Whether this node contributes a new clip (that is, whether |clip| needs to
   // be applied), rather than only inheriting ancestor clips.