compositor-worker: Initialize CW machinery plumbing to compositor and fire CW rAF callbacks.

cc/trees/layer_tree_host_impl.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_IMPL_H_
 #define CC_TREES_LAYER_TREE_HOST_IMPL_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 132 matching lines @@
 // LayerTreeHostImpl owns the LayerImpl trees as well as associated rendering
 // state.
 class CC_EXPORT LayerTreeHostImpl
     : public InputHandler,
       public RendererClient,
       public TileManagerClient,
       public OutputSurfaceClient,
       public TopControlsManagerClient,
       public ScrollbarAnimationControllerClient,
       public VideoFrameControllerClient,
+      public LayerTreeMutatorClient,
       public MutatorHostClient,
       public base::SupportsWeakPtr<LayerTreeHostImpl> {
  public:
   static std::unique_ptr<LayerTreeHostImpl> Create(
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* client,
       TaskRunnerProvider* task_runner_provider,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
       SharedBitmapManager* shared_bitmap_manager,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
@@ skipping 69 matching lines @@
     void AppendRenderPass(std::unique_ptr<RenderPass> render_pass) override;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(FrameData);
   };
 
   virtual void BeginMainFrameAborted(CommitEarlyOutReason reason);
   virtual void BeginCommit();
   virtual void CommitComplete();
   virtual void UpdateAnimationState(bool start_ready_animations);
+  bool Mutate(base::TimeTicks monotonic_time);
   void ActivateAnimations();
   void Animate();
   void AnimatePendingTreeAfterCommit();
   void MainThreadHasStoppedFlinging();
   void DidAnimateScrollOffset();
   void SetViewportDamage(const gfx::Rect& damage_rect);
 
   void SetTreeLayerFilterMutated(int layer_id,
                                  LayerTreeImpl* tree,
                                  const FilterOperations& filters);
@@ skipping 112 matching lines @@
   void DidSwapBuffers() override;
   void DidSwapBuffersComplete() override;
   void ReclaimResources(const CompositorFrameAck* ack) override;
   void SetMemoryPolicy(const ManagedMemoryPolicy& policy) override;
   void SetTreeActivationCallback(const base::Closure& callback) override;
   void OnDraw(const gfx::Transform& transform,
               const gfx::Rect& viewport,
               const gfx::Rect& clip,
               bool resourceless_software_draw) override;
 
+  // LayerTreeMutatorClient.
+  void SetNeedsMutate() override;
+
   // Called from LayerTreeImpl.
   void OnCanDrawStateChangedForTree();
 
   // Implementation.
   int id() const { return id_; }
   bool CanDraw() const;
   OutputSurface* output_surface() const { return output_surface_; }
   void ReleaseOutputSurface();
 
   std::string LayerTreeAsJson() const;
@@ skipping 245 matching lines @@
   InputHandler::ScrollStatus TryScroll(const gfx::PointF& screen_space_point,
                                        InputHandler::ScrollInputType type,
                                        const ScrollTree& scroll_tree,
                                        ScrollNode* scroll_node) const;
 
   // Returns true if a scroll offset animation is created and false if we scroll
   // by the desired amount without an animation.
   bool ScrollAnimationCreate(ScrollNode* scroll_node,
                              const gfx::Vector2dF& scroll_amount);
 
-  void SetLayerTreeMutator(LayerTreeMutator* mutator);
-  LayerTreeMutator* mutator() { return mutator_; }
+  void SetLayerTreeMutator(std::unique_ptr<LayerTreeMutator> mutator);
+  LayerTreeMutator* mutator() { return mutator_.get(); }
 
  protected:
   LayerTreeHostImpl(
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* client,
       TaskRunnerProvider* task_runner_provider,
       RenderingStatsInstrumentation* rendering_stats_instrumentation,
       SharedBitmapManager* shared_bitmap_manager,
       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
       TaskGraphRunner* task_graph_runner,
@@ skipping 211 matching lines @@
 
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   bool requires_high_res_to_draw_;
   bool is_likely_to_require_a_draw_;
 
   std::unique_ptr<FrameTimingTracker> frame_timing_tracker_;
 
   std::unique_ptr<Viewport> viewport_;
 
-  LayerTreeMutator* mutator_;
+  std::unique_ptr<LayerTreeMutator> mutator_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_