Move LanguageState to the translate component

chrome/browser/ui/browser_language_state_observer.h

 // Copyright 2013 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_BROWSER_LANGUAGE_STATE_OBSERVER_H_
 #define CHROME_BROWSER_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_
 
-#include "chrome/browser/tab_contents/language_state_observer.h"
+#include "components/translate/content/browser/language_state_observer.h"
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 
 class Browser;
 
 // Implementation of LanguageStateObserver for Browser. This observes the state
 // if Translate is enabled or not, and updates toolbar in response to changes in
 // state of translate.
 class BrowserLanguageStateObserver : public LanguageStateObserver {
  public:
   explicit BrowserLanguageStateObserver(Browser* browser);
 
   virtual ~BrowserLanguageStateObserver();
 
   // Overridden from LanguageState::Observer
   virtual void OnIsPageTranslatedChanged(content::WebContents* source) OVERRIDE;
   virtual void OnTranslateEnabledChanged(content::WebContents* source) OVERRIDE;
 
  private:
   Browser* browser_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserLanguageStateObserver);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_LANGUAGE_STATE_OBSERVER_H_