Adds selection expansion support for Contextual Search.

content/public/browser/render_view_host.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_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_
 
 #include "base/callback_forward.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/render_widget_host.h"
@@ skipping 179 matching lines @@
   // If any state that affects the webkit preferences changed, this method must
   // be called. This triggers recomputing preferences.
   virtual void OnWebkitPreferencesChanged() = 0;
 
   // Passes a list of Webkit preferences to the renderer.
   virtual void UpdateWebkitPreferences(const WebPreferences& prefs) = 0;
 
   // Notify the render view host to select the word around the caret.
   virtual void SelectWordAroundCaret() = 0;
 
+  // Notify the render view host to adjust the current selection by the given
+  // amounts.
+  virtual void MoveSelectionByCharacterOffset(int start_adjust,
+                                              int end_adjust) = 0;
+
 #if defined(OS_ANDROID)
   // Selects and zooms to the find result nearest to the point (x,y)
   // defined in find-in-page coordinates.
   virtual void ActivateNearestFindResult(int request_id, float x, float y) = 0;
 
   // Asks the renderer to send the rects of the current find matches.
   virtual void RequestFindMatchRects(int current_version) = 0;
 #endif
 
  private:
   // This interface should only be implemented inside content.
   friend class RenderViewHostImpl;
   RenderViewHost() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_VIEW_HOST_H_