cc : Cache trasnforms to target even when target is a descendant

cc/trees/draw_property_utils.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/draw_property_utils.h"
 
 #include <stddef.h>
 
 #include <vector>
 
@@ skipping 112 matching lines @@
       VerifySurfaceContentsScalesMatch(clip_node->target_effect_id,
                                        clip_node->target_transform_id,
                                        effect_tree, transform_tree);
 #endif
       *clip_rect_in_target_space = MathUtil::MapClippedRect(
           clip_to_target, clip_node->clip_in_target_space);
     } else {
       return false;
     }
   } else {
-    if (property_trees->ComputeTransformToTarget(clip_node->target_transform_id,
-                                                 target_effect_node->id,
-                                                 &clip_to_target)) {
+    if (property_trees->ComputeTransformFromTarget(
+            target_node_id, clip_node->target_effect_id, &clip_to_target)) {
       *clip_rect_in_target_space = MathUtil::ProjectClippedRect(
           clip_to_target, clip_node->clip_in_target_space);
     } else {
       return false;
     }
   }
   return true;
 }
 
 struct ConditionalClip {
@@ skipping 1450 matching lines @@
 void UpdateElasticOverscroll(PropertyTrees* property_trees,
                              const Layer* overscroll_elasticity_layer,
                              const gfx::Vector2dF& elastic_overscroll) {
   UpdateElasticOverscrollInternal(property_trees, overscroll_elasticity_layer,
                                   elastic_overscroll);
 }
 
 }  // namespace draw_property_utils
 
 }  // namespace cc