cc: Compute RenderSurfaceImpl's ClipTreeIndex using its effect node

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 1439 matching lines @@
   render_surface->SetIsClipped(effect_node->surface_is_clipped);
   SetSurfaceDrawOpacity(property_trees->effect_tree, render_surface);
   SetSurfaceDrawTransform(property_trees, render_surface);
   render_surface->SetScreenSpaceTransform(
       property_trees->ToScreenSpaceTransformWithoutSurfaceContentsScale(
           render_surface->TransformTreeIndex(),
           render_surface->EffectTreeIndex()));
 
   const ClipNode* clip_node =
       property_trees->clip_tree.Node(render_surface->ClipTreeIndex());
-  SetSurfaceClipRect(property_trees->clip_tree.parent(clip_node),
-                     property_trees, render_surface);
+  SetSurfaceClipRect(clip_node, property_trees, render_surface);
 }
 
 #if DCHECK_IS_ON()
 static void ValidatePageScaleLayer(const Layer* page_scale_layer) {
   DCHECK_EQ(page_scale_layer->position().ToString(), gfx::PointF().ToString());
   DCHECK_EQ(page_scale_layer->transform_origin().ToString(),
             gfx::Point3F().ToString());
 }
 
 static void ValidatePageScaleLayer(const LayerImpl* page_scale_layer) {}
@@ skipping 85 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