New Tab: fix tab title flickering.

chrome/browser/ui/search/search_tab_helper.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 CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
 #define CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 102 matching lines @@
                            DetermineIfPageSupportsInstant_NonLocal);
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest,
                            PageURLDoesntBelongToInstantRenderer);
   FRIEND_TEST_ALL_PREFIXES(InstantPageTest, PageSupportsInstant);
 
   explicit SearchTabHelper(content::WebContents* web_contents);
 
   // Overridden from contents::WebContentsObserver:
   virtual void RenderViewCreated(
       content::RenderViewHost* render_view_host) OVERRIDE;
+  virtual void DidStartNavigationToPendingEntry(
+      const GURL& url,
+      content::NavigationController::ReloadType reload_type) OVERRIDE;
   virtual void DidNavigateMainFrame(
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) OVERRIDE;
   virtual void DidFailProvisionalLoad(
       int64 frame_id,
       const string16& frame_unique_name,
       bool is_main_frame,
       const GURL& validated_url,
       int error_code,
       const string16& error_description,
@@ skipping 62 matching lines @@
   content::WebContents* web_contents_;
 
   SearchIPCRouter ipc_router_;
 
   InstantService* instant_service_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchTabHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_SEARCH_SEARCH_TAB_HELPER_H_