Adds selection expansion support for Contextual Search.

content/browser/web_contents/web_contents_impl.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_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 551 matching lines @@
   void DidSendScreenRects(RenderWidgetHostImpl* rwh) override;
   BrowserAccessibilityManager* GetRootBrowserAccessibilityManager() override;
   BrowserAccessibilityManager* GetOrCreateRootBrowserAccessibilityManager()
       override;
   // Following three functions are already listed under WebContents overrides.
   // void Cut() override;
   // void Copy() override;
   // void Paste() override;
   void MoveRangeSelectionExtent(const gfx::Point& extent) override;
   void SelectRange(const gfx::Point& base, const gfx::Point& extent) override;
+  void ExpandSelectionByCharacterOffset(int start_adjust, int end_adjust)
+      override;
 
   // RenderFrameHostManager::Delegate ------------------------------------------
 
   bool CreateRenderViewForRenderManager(
       RenderViewHost* render_view_host,
       int opener_route_id,
       int proxy_routing_id,
       const FrameReplicationState& replicated_frame_state,
       bool for_main_frame_navigation) override;
   bool CreateRenderFrameForRenderManager(RenderFrameHost* render_frame_host,
@@ skipping 704 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_