cc : Make tree synchronization independent of layer tree hierarchy (2)

cc/trees/layer_tree_host.h

 // 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.
 
 #ifndef CC_TREES_LAYER_TREE_HOST_H_
 #define CC_TREES_LAYER_TREE_HOST_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 339 matching lines @@
   PropertyTrees* property_trees() { return &property_trees_; }
   bool needs_meta_info_recomputation() {
     return needs_meta_info_recomputation_;
   }
 
   void RecordFrameTimingEvents(
       scoped_ptr<FrameTimingTracker::CompositeTimingSet> composite_events,
       scoped_ptr<FrameTimingTracker::MainFrameTimingSet> main_frame_events);
 
   Layer* LayerById(int id) const;
+
+  void AddLayerShouldPushProperties(Layer* layer);
+  void RemoveLayerShouldPushProperties(Layer* layer);
+  std::unordered_set<Layer*>& LayersThatShouldPushProperties();
+  bool LayerNeedsPushPropertiesForTesting(Layer* layer);
+
   void RegisterLayer(Layer* layer);
   void UnregisterLayer(Layer* layer);
   // LayerTreeMutatorsClient implementation.
   bool IsLayerInTree(int layer_id, LayerTreeType tree_type) const override;
   void SetMutatorsNeedCommit() override;
   void SetMutatorsNeedRebuildPropertyTrees() override;
   void SetLayerFilterMutated(int layer_id,
                              LayerTreeType tree_type,
                              const FilterOperations& filters) override;
   void SetLayerOpacityMutated(int layer_id,
@@ skipping 24 matching lines @@
   bool AnimationStartScale(const Layer* layer, float* start_scale) const;
   bool HasAnyAnimationTargetingProperty(const Layer* layer,
                                         TargetProperty::Type property) const;
   bool AnimationsPreserveAxisAlignment(const Layer* layer) const;
   bool HasAnyAnimation(const Layer* layer) const;
   bool HasActiveAnimationForTesting(const Layer* layer) const;
 
   // Serializes the parts of this LayerTreeHost that is needed for a commit to a
   // protobuf message. Not all members are serialized as they are not helpful
   // for remote usage.
-  void ToProtobufForCommit(proto::LayerTreeHost* proto) const;
+  void ToProtobufForCommit(proto::LayerTreeHost* proto);
 
   // Deserializes the protobuf into this LayerTreeHost before a commit. The
   // expected input is a serialized remote LayerTreeHost. After deserializing
   // the protobuf, the normal commit-flow should continue.
   void FromProtobufForCommit(const proto::LayerTreeHost& proto);
 
   bool IsSingleThreaded() const;
   bool IsThreaded() const;
   bool IsRemoteServer() const;
   bool IsRemoteClient() const;
@@ skipping 158 matching lines @@
 
   ImageSerializationProcessor* image_serialization_processor_;
 
   std::vector<scoped_ptr<SwapPromise>> swap_promise_list_;
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   PropertyTrees property_trees_;
 
   using LayerIdMap = std::unordered_map<int, Layer*>;
   LayerIdMap layer_id_map_;
+  // Set of layers that need to push properties.
+  std::unordered_set<Layer*> layers_that_should_push_properties_;
 
   uint32_t surface_id_namespace_;
   uint32_t next_surface_sequence_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHost);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_H_