cc/blimp: Set up the framework for state serialization.

cc/blimp/layer_tree_host_remote.h

 // Copyright 2016 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_BLIMP_LAYER_TREE_HOST_REMOTE_H_
 #define CC_BLIMP_LAYER_TREE_HOST_REMOTE_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "cc/base/cc_export.h"
 #include "cc/blimp/remote_compositor_bridge_client.h"
 #include "cc/debug/layer_tree_debug_state.h"
 #include "cc/trees/layer_tree_host.h"
 #include "cc/trees/layer_tree_settings.h"
 #include "cc/trees/surface_sequence_generator.h"
 #include "cc/trees/swap_promise_manager.h"
 
 namespace base {
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace cc {
+namespace proto {
+class LayerTreeHost;
+}  // namespace proto
+
 class AnimationHost;
 class RemoteCompositorBridge;
 class LayerTreeHostClient;
 
 class CC_EXPORT LayerTreeHostRemote : public LayerTreeHost,
                                       public RemoteCompositorBridgeClient {
  public:
   struct CC_EXPORT InitParams {
     LayerTreeHostClient* client = nullptr;
     scoped_refptr<base::SingleThreadTaskRunner> main_task_runner;
@@ skipping 63 matching lines @@
  private:
   enum class FramePipelineStage { NONE, ANIMATE, UPDATE_LAYERS, COMMIT };
 
   // RemoteCompositorBridgeClient implementation.
   void BeginMainFrame() override;
 
   void MainFrameRequested(FramePipelineStage requested_pipeline_stage);
   void ScheduleMainFrameIfNecessary();
   void MainFrameComplete();
   void DispatchDrawAndSwapCallbacks();
+  void SerializeCurrentState(proto::LayerTreeHost* layer_tree_host_proto);
 
   const int id_;
   int source_frame_number_ = 0;
   bool visible_ = false;
   bool defer_commits_ = false;
 
   // Set to true if a main frame request is pending on the
   // RemoteCompositorBridge.
   bool main_frame_requested_from_bridge_ = false;
 
@@ skipping 26 matching lines @@
   SurfaceSequenceGenerator surface_sequence_generator_;
 
   base::WeakPtr<InputHandler> input_handler_weak_ptr_;
 
   base::WeakPtrFactory<LayerTreeHostRemote> weak_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_BLIMP_LAYER_TREE_HOST_REMOTE_H_