cc : Add subtree is hidden bool to effect tree

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 837 matching lines @@
     return 0.f;
 
   const EffectNode* target_node =
       tree.Node(layer->render_target()->EffectTreeIndex());
   const EffectNode* node = tree.Node(layer->effect_tree_index());
   if (node == target_node)
     return 1.f;
 
   float draw_opacity = 1.f;
   while (node != target_node) {
-    draw_opacity *= node->data.opacity;
+    draw_opacity *= tree.EffectiveOpacity(node);
     node = tree.parent(node);
   }
   return draw_opacity;
 }
 
 static void SetSurfaceDrawOpacity(const EffectTree& tree,
                                   RenderSurfaceImpl* render_surface) {
   // Draw opacity of a surface is the product of opacities between the surface
   // (included) and its target surface (excluded).
   const EffectNode* node = tree.Node(render_surface->EffectTreeIndex());
-  float draw_opacity = node->data.opacity;
+  float draw_opacity = tree.EffectiveOpacity(node);
   for (node = tree.parent(node); node && !node->data.has_render_surface;
        node = tree.parent(node)) {
-    draw_opacity *= node->data.opacity;
+    draw_opacity *= tree.EffectiveOpacity(node);
   }
   render_surface->SetDrawOpacity(draw_opacity);
 }
 
 static bool LayerCanUseLcdText(const LayerImpl* layer,
                                bool layers_always_allowed_lcd_text,
                                bool can_use_lcd_text,
                                const TransformNode* transform_node,
                                const EffectNode* effect_node) {
   if (layers_always_allowed_lcd_text)
@@ skipping 230 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