Apply per-tab preference after RenderViewImpl creation.

chrome/browser/ui/tab_contents/per_tab_prefs_tab_helper.h

 // Copyright (c) 2011 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_TAB_CONTENTS_PER_TAB_PREFS_TAB_HELPER_H_
 #define CHROME_BROWSER_UI_TAB_CONTENTS_PER_TAB_PREFS_TAB_HELPER_H_
 #pragma once
 
 #include "chrome/browser/prefs/pref_change_registrar.h"
 #include "content/browser/tab_contents/tab_contents_observer.h"
 
 class PrefService;
 class TabContentsWrapper;
 struct WebPreferences;
 
 // Per-tab class to override user preferences.
 class PerTabPrefsTabHelper : public TabContentsObserver {
  public:
   explicit PerTabPrefsTabHelper(TabContentsWrapper* tab_contents);
   virtual ~PerTabPrefsTabHelper();
 
   PrefService* prefs() { return prefs_.get(); }
 
   void OverrideWebPreferences(WebPreferences* prefs);
 
  private:
   void RegisterPerTabUserPrefs(PrefService* prefs);
 
   // TabContentsObserver overrides:
+  virtual void RenderViewCreated(RenderViewHost* render_view_host) OVERRIDE;
   virtual void TabContentsDestroyed(TabContents* tab) OVERRIDE;
 
   // Our owning TabContentsWrapper.
   TabContentsWrapper* wrapper_;
 
   scoped_ptr<PrefService> prefs_;
   PrefChangeRegistrar pref_change_registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(PerTabPrefsTabHelper);
 };
 
 #endif  // CHROME_BROWSER_UI_TAB_CONTENTS_PER_TAB_PREFS_TAB_HELPER_H_