cc: Compute transform to target using effect id.

cc/trees/layer_tree_impl.cc

 // Copyright 2011 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/layer_tree_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 983 matching lines @@
       if (it.represents_contributing_render_surface()) {
         // Surfaces aren't used by the tile raster code, so they can have
         // occlusion regardless of replicas.
         const RenderSurfaceImpl* occlusion_surface =
             occlusion_tracker.OcclusionSurfaceForContributingSurface();
         gfx::Transform draw_transform;
         if (occlusion_surface) {
           // We are calculating transform between two render surfaces. So, we
           // need to apply the surface contents scale at target and remove the
           // surface contents scale at source.
-          property_trees()->transform_tree.ComputeTransform(
+          property_trees()->ComputeTransformToTarget(
               it->render_surface()->TransformTreeIndex(),
-              occlusion_surface->TransformTreeIndex(), &draw_transform);
+              occlusion_surface->EffectTreeIndex(), &draw_transform);
           // We don't have to apply surface contents scale when target is root.
           if (occlusion_surface->TransformTreeIndex() != 0) {
             const EffectNode* occlusion_effect_node =
                 property_trees()->effect_tree.Node(
                     occlusion_surface->EffectTreeIndex());
             draw_property_utils::PostConcatSurfaceContentsScale(
                 occlusion_effect_node, &draw_transform);
           }
           const EffectNode* effect_node = property_trees()->effect_tree.Node(
               it->render_surface()->EffectTreeIndex());
@@ skipping 1015 matching lines @@
 
 void LayerTreeImpl::ResetAllChangeTracking() {
   layers_that_should_push_properties_.clear();
   // Iterate over all layers, including masks and replicas.
   for (auto& layer : *layers_)
     layer->ResetChangeTracking();
   property_trees_.ResetAllChangeTracking();
 }
 
 }  // namespace cc