Move Render(View|Widget)Host and associated classes to content namespace.

chrome/browser/tab_contents/spellchecker_submenu_observer_hunspell.cc

 // 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.
 
 #include "chrome/browser/tab_contents/spellchecker_submenu_observer.h"
 
 #include "base/logging.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_member.h"
@@ skipping 148 matching lines @@
     if (profile && language < languages_.size()) {
       StringPrefMember dictionary_language;
       dictionary_language.Init(prefs::kSpellCheckDictionary,
                                profile->GetPrefs(),
                                NULL);
       dictionary_language.SetValue(languages_[language]);
     }
     return;
   }
 
-  RenderViewHost* rvh = proxy_->GetRenderViewHost();
+  content::RenderViewHost* rvh = proxy_->GetRenderViewHost();
   switch (command_id) {
     case IDC_CHECK_SPELLING_OF_THIS_FIELD:
       rvh->Send(new SpellCheckMsg_ToggleSpellCheck(rvh->GetRoutingID()));
       break;
   }
 }