cc : Add subtree is hidden bool to effect tree

cc/trees/property_tree.h

 // 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.
 
 #ifndef CC_TREES_PROPERTY_TREE_H_
 #define CC_TREES_PROPERTY_TREE_H_
 
 #include <stddef.h>
 
 #include <unordered_map>
@@ skipping 252 matching lines @@
   float opacity;
   float screen_space_opacity;
 
   bool has_render_surface;
   RenderSurfaceImpl* render_surface;
   bool has_copy_request;
   bool has_background_filters;
   bool hidden_by_backface_visibility;
   bool double_sided;
   bool is_drawn;
+  // TODO(jaydasika) : Delete this after implementation of
+  // SetHideLayerAndSubtree is cleaned up. (crbug.com/595843)
+  bool subtree_hidden;
   bool has_animated_opacity;
   // We need to track changes to effects on the compositor to compute damage
   // rect.
   bool effect_changed;
   int num_copy_requests_in_subtree;
   int transform_id;
   int clip_id;
   // Effect node id of which this effect contributes to.
   int target_id;
 
@@ skipping 258 matching lines @@
   gfx::RectF ViewportClip();
 
   void ToProtobuf(proto::PropertyTree* proto) const;
   void FromProtobuf(const proto::PropertyTree& proto);
 };
 
 class CC_EXPORT EffectTree final : public PropertyTree<EffectNode> {
  public:
   bool operator==(const EffectTree& other) const;
 
+  float EffectiveOpacity(const EffectNode* node) const;
+
   void UpdateEffects(int id);
 
   void UpdateEffectChanged(EffectNode* node, EffectNode* parent_node);
 
   void ClearCopyRequests();
 
   bool ContributesToDrawnSurface(int id);
 
   void ResetChangeTracking();
 
@@ skipping 125 matching lines @@
 
  private:
   gfx::Vector2dF inner_viewport_container_bounds_delta_;
   gfx::Vector2dF outer_viewport_container_bounds_delta_;
   gfx::Vector2dF inner_viewport_scroll_bounds_delta_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROPERTY_TREE_H_