Blink handle selection handle visibility

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 <bitset>
@@ skipping 213 matching lines @@
     ~FrameData() override;
     void AsValueInto(base::trace_event::TracedValue* value) const;
 
     std::vector<gfx::Rect> occluding_screen_space_rects;
     std::vector<gfx::Rect> non_occluding_screen_space_rects;
     RenderPassList render_passes;
     const LayerImplList* render_surface_layer_list;
     LayerImplList will_draw_layers;
     bool has_no_damage;
     bool may_contain_video;
+    bool handle_visibility_changed;
 
     // RenderPassSink implementation.
     void AppendRenderPass(std::unique_ptr<RenderPass> render_pass) override;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(FrameData);
   };
 
   virtual void BeginMainFrameAborted(
       CommitEarlyOutReason reason,
@@ skipping 128 matching lines @@
   void SetTreeActivationCallback(const base::Closure& callback) override;
   void OnDraw(const gfx::Transform& transform,
               const gfx::Rect& viewport,
               bool resourceless_software_draw) override;
 
   // LayerTreeMutatorClient.
   void SetNeedsMutate() override;
 
   // Called from LayerTreeImpl.
   void OnCanDrawStateChangedForTree();
+  void HandleVisibilityChanged() { handle_visibility_changed_ = true; }
 
   // Implementation.
   int id() const { return id_; }
   bool CanDraw() const;
   CompositorFrameSink* compositor_frame_sink() const {
     return compositor_frame_sink_;
   }
   void ReleaseCompositorFrameSink();
 
   std::string LayerTreeAsJson() const;
@@ skipping 430 matching lines @@
 
   SharedBitmapManager* shared_bitmap_manager_;
   gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager_;
   TaskGraphRunner* task_graph_runner_;
   int id_;
 
   std::set<SwapPromiseMonitor*> swap_promise_monitor_;
 
   bool requires_high_res_to_draw_;
   bool is_likely_to_require_a_draw_;
+  bool handle_visibility_changed_;
 
   // TODO(danakj): Delete the compositor frame sink and all resources when
   // it's lost instead of having this bool.
   bool has_valid_compositor_frame_sink_;
 
   std::unique_ptr<Viewport> viewport_;
 
   std::unique_ptr<LayerTreeMutator> mutator_;
 
   std::unique_ptr<PendingTreeDurationHistogramTimer>
       pending_tree_duration_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(LayerTreeHostImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_HOST_IMPL_H_