cc: Remove map lookup from RenderSurfaceImpl::EffectTreeIndex

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 <memory>
@@ skipping 12 matching lines @@
 namespace base {
 namespace trace_event {
 class TracedValue;
 }
 }
 
 namespace cc {
 
 class CopyOutputRequest;
 class LayerTreeImpl;
+class RenderSurfaceImpl;
 class ScrollState;
 struct ClipNode;
 struct EffectNode;
 struct ScrollAndScaleSet;
 struct ScrollNode;
 struct TransformNode;
 struct TransformCachedNodeData;
 
 typedef SyncedProperty<AdditionGroup<gfx::ScrollOffset>> SyncedScrollOffset;
 
@@ skipping 281 matching lines @@
 
   int ClosestAncestorWithCopyRequest(int id) const;
 
   void AddMaskLayerId(int id);
   const std::vector<int>& mask_layer_ids() const { return mask_layer_ids_; }
 
   bool ContributesToDrawnSurface(int id);
 
   void ResetChangeTracking();
 
+  // A list of pairs of stable id and render surface, sorted by stable id.
+  using StableIdRenderSurfaceList =
+      std::vector<std::pair<int, RenderSurfaceImpl*>>;
+  StableIdRenderSurfaceList CreateStableIdRenderSurfaceList() const;
+  void UpdateRenderSurfaceEffectIds(
+      const StableIdRenderSurfaceList& stable_id_render_surface_list,
+      LayerTreeImpl* layer_tree_impl);
+
  private:
   void UpdateOpacities(EffectNode* node, EffectNode* parent_node);
   void UpdateIsDrawn(EffectNode* node, EffectNode* parent_node);
   void UpdateBackfaceVisibility(EffectNode* node, EffectNode* parent_node);
 
   // Stores copy requests, keyed by node id.
   std::unordered_multimap<int, std::unique_ptr<CopyOutputRequest>>
       copy_requests_;
 
   // Unsorted list of all mask layer ids that effect nodes refer to.
@@ skipping 260 matching lines @@
   DrawTransforms& GetDrawTransforms(int transform_id, int effect_id) const;
   DrawTransformData& FetchDrawTransformsDataFromCache(int transform_id,
                                                       int effect_id) const;
 
   PropertyTreesCachedData cached_data_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_PROPERTY_TREE_H_