Route selection bounds updates through the compositor

cc/trees/layer_tree_impl.h

 // Copyright 2012 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_IMPL_H_
 #define CC_TREES_LAYER_TREE_IMPL_H_
 
 #include <list>
 #include <string>
 #include <vector>
@@ skipping 30 matching lines @@
 class LayerTreeSettings;
 class MemoryHistory;
 class OutputSurface;
 class PaintTimeCounter;
 class PictureLayerImpl;
 class Proxy;
 class ResourceProvider;
 class TileManager;
 class UIResourceRequest;
 struct RendererCapabilities;
+struct SelectionHandle;
 
 typedef std::list<UIResourceRequest> UIResourceRequestQueue;
 
 class CC_EXPORT LayerTreeImpl {
  public:
   static scoped_ptr<LayerTreeImpl> create(
       LayerTreeHostImpl* layer_tree_host_impl) {
     return make_scoped_ptr(new LayerTreeImpl(layer_tree_host_impl));
   }
   virtual ~LayerTreeImpl();
@@ skipping 195 matching lines @@
   }
 
   LayerImpl* FindFirstScrollingLayerThatIsHitByPoint(
       const gfx::PointF& screen_space_point);
 
   LayerImpl* FindLayerThatIsHitByPoint(const gfx::PointF& screen_space_point);
 
   LayerImpl* FindLayerThatIsHitByPointInTouchHandlerRegion(
       const gfx::PointF& screen_space_point);
 
+  void RegisterSelection(const LayerSelectionBound& anchor,
+                         const LayerSelectionBound& focus);
+
+  // Compute the current selection handle location and visbility with respect to
+  // the viewport.
+  void GetViewportSelection(ViewportSelectionBound* anchor,
+                            ViewportSelectionBound* focus);
+
   void RegisterPictureLayerImpl(PictureLayerImpl* layer);
   void UnregisterPictureLayerImpl(PictureLayerImpl* layer);
 
  protected:
   explicit LayerTreeImpl(LayerTreeHostImpl* layer_tree_host_impl);
   void ReleaseResourcesRecursive(LayerImpl* current);
+  void ClearSelection();
 
   LayerTreeHostImpl* layer_tree_host_impl_;
   int source_frame_number_;
   scoped_ptr<LayerImpl> root_layer_;
   HeadsUpDisplayLayerImpl* hud_layer_;
   LayerImpl* currently_scrolling_layer_;
   LayerScrollOffsetDelegate* root_layer_scroll_offset_delegate_;
   scoped_ptr<LayerScrollOffsetDelegateProxy>
       inner_viewport_scroll_delegate_proxy_;
   scoped_ptr<LayerScrollOffsetDelegateProxy>
       outer_viewport_scroll_delegate_proxy_;
   SkColor background_color_;
   bool has_transparent_background_;
 
   LayerImpl* page_scale_layer_;
   LayerImpl* inner_viewport_scroll_layer_;
   LayerImpl* outer_viewport_scroll_layer_;
 
+  LayerSelectionBound selection_anchor_;
+  LayerSelectionBound selection_focus_;
+
   float page_scale_factor_;
   float page_scale_delta_;
   float sent_page_scale_delta_;
   float min_page_scale_factor_;
   float max_page_scale_factor_;
 
   typedef base::hash_map<int, LayerImpl*> LayerIdMap;
   LayerIdMap layer_id_map_;
 
   std::vector<LayerImpl*> layers_with_copy_output_request_;
@@ skipping 21 matching lines @@
 
   int render_surface_layer_list_id_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(LayerTreeImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_IMPL_H_