cc: Make animations tick regardless of drawing.

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 <string>
 #include <vector>
 
@@ skipping 122 matching lines @@
     bool contains_incomplete_tile;
 
     // RenderPassSink implementation.
     virtual void AppendRenderPass(scoped_ptr<RenderPass> render_pass) OVERRIDE;
   };
 
   virtual void BeginCommit();
   virtual void CommitComplete();
   virtual void Animate(base::TimeTicks monotonic_time,
                        base::Time wall_clock_time);
+  virtual void UpdateAnimationState();
+  void UpdateBackgroundAnimateTicking();
 
   void ManageTiles();
   void SetAnticipatedDrawTime(base::TimeTicks time);
 
   // Returns false if problems occured preparing the frame, and we should try
   // to avoid displaying the frame. If PrepareToDraw is called, DidDrawAllLayers
   // must also be called, regardless of whether DrawLayers is called between the
   // two.
   virtual bool PrepareToDraw(FrameData* frame);
   virtual void DrawLayers(FrameData* frame, base::TimeTicks frame_begin_time);
@@ skipping 195 matching lines @@
   LayerTreeHostImpl(
       const LayerTreeSettings& settings,
       LayerTreeHostImplClient* client,
       Proxy* proxy,
       RenderingStatsInstrumentation* rendering_stats_instrumentation);
   void ActivatePendingTree();
 
   // Virtual for testing.
   virtual void AnimateLayers(base::TimeTicks monotonic_time,
                              base::Time wall_clock_time);
-  virtual void UpdateAnimationState();
 
   // Virtual for testing.
   virtual base::TimeDelta LowFrequencyAnimationInterval() const;
 
   const AnimationRegistrar::AnimationControllerMap&
       active_animation_controllers() const {
     return animation_registrar_->active_animation_controllers();
   }
 
   LayerTreeHostImplClient* client_;
@@ skipping 12 matching lines @@
 
   void UpdateMaxScrollOffset();
   void TrackDamageForAllSurfaces(
       LayerImpl* root_draw_layer,
       const LayerImplList& render_surface_layer_list);
 
   // Returns false if the frame should not be displayed. This function should
   // only be called from PrepareToDraw, as DidDrawAllLayers must be called
   // if this helper function is called.
   bool CalculateRenderPasses(FrameData* frame);
-  void SetBackgroundTickingEnabled(bool enabled);
 
   void SendDidLoseOutputSurfaceRecursive(LayerImpl* current);
   void ClearRenderSurfaces();
   bool EnsureRenderSurfaceLayerList();
   void ClearCurrentlyScrollingLayer();
 
   void AnimateScrollbarsRecursive(LayerImpl* layer,
                                   base::TimeTicks time);
 
   void DumpRenderSurfaces(std::string* str,
@@ skipping 64 matching lines @@
   scoped_ptr<AnimationRegistrar> animation_registrar_;
 
   RenderingStatsInstrumentation* rendering_stats_instrumentation_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_