cc : Fix transform calculation bug while calculating clip rects

cc/trees/property_tree.h

Index: cc/trees/property_tree.h
diff --git a/cc/trees/property_tree.h b/cc/trees/property_tree.h
index e8038e6a0d05bd9adeda00a152a741fcbdf4e03c..2edee74c6030d55ae959bce3c68ca45c0affcc4d 100644
--- a/cc/trees/property_tree.h
+++ b/cc/trees/property_tree.h
@@ -640,10 +640,6 @@ class CC_EXPORT PropertyTrees final {
       int transform_id,
       int effect_id) const;
 
-  bool ComputeTransformFromTarget(int transform_id,
-                                  int effect_id,
-                                  gfx::Transform* transform) const;
-
  private:
   gfx::Vector2dF inner_viewport_container_bounds_delta_;
   gfx::Vector2dF outer_viewport_container_bounds_delta_;