Add an interface to gather text surrounding the selection.

content/browser/renderer_host/render_widget_host_view_android.h

 // Copyright (c) 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 206 matching lines @@
 
   bool HasValidFrame() const;
 
   void MoveCaret(const gfx::Point& point);
 
   void SynchronousFrameMetadata(
       const cc::CompositorFrameMetadata& frame_metadata);
 
   void SetOverlayVideoMode(bool enabled);
 
+  typedef base::Callback<
+      void(const base::string16& content, int start_offset, int end_offset)>
+      TextSurroundingSelectionCallback;
+  void SetTextSurroundingSelectionCallback(
+      const TextSurroundingSelectionCallback& callback);
+
  private:
   void RunAckCallbacks();
 
   void DestroyDelegatedContent();
   void SwapDelegatedFrame(uint32 output_surface_id,
                           scoped_ptr<cc::DelegatedFrameData> frame_data);
   void SendDelegatedFrameAck(uint32 output_surface_id);
   void SendReturnedDelegatedResources(uint32 output_surface_id);
 
   void OnFrameMetadataUpdated(
@@ skipping 39 matching lines @@
   // current frame.
   void RetainFrame(uint32 output_surface_id,
                    scoped_ptr<cc::CompositorFrame> frame);
 
   void InternalSwapCompositorFrame(uint32 output_surface_id,
                                    scoped_ptr<cc::CompositorFrame> frame);
 
   void SetNeedsAnimate();
   bool Animate(base::TimeTicks frame_time);
 
-
   // The model object.
   RenderWidgetHostImpl* host_;
 
   // Used to track whether this render widget needs a BeginFrame.
   bool needs_begin_frame_;
 
   bool is_showing_;
 
   // ContentViewCoreImpl is our interface to the view system.
   ContentViewCoreImpl* content_view_core_;
@@ skipping 49 matching lines @@
   struct LastFrameInfo {
     LastFrameInfo(uint32 output_id,
                   scoped_ptr<cc::CompositorFrame> output_frame);
     ~LastFrameInfo();
     uint32 output_surface_id;
     scoped_ptr<cc::CompositorFrame> frame;
   };
 
   scoped_ptr<LastFrameInfo> last_frame_info_;
 
+  TextSurroundingSelectionCallback text_surrounding_selection_callback_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_