LanguageState should be owned by TranslateManager

components/translate/core/browser/language_state_unittest.cc

 // Copyright 2014 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 "components/translate/core/browser/language_state.h"
 
 #include "base/memory/scoped_ptr.h"
 #include "components/translate/core/browser/language_state.h"
 #include "components/translate/core/browser/translate_driver.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 23 matching lines @@
   }
 
   virtual void OnTranslateEnabledChanged() OVERRIDE {
     on_translate_enabled_changed_called_ = true;
   }
 
   virtual bool IsLinkNavigation() OVERRIDE {
     return false;
   }
 
-  virtual LanguageState& GetLanguageState() OVERRIDE {
-    return language_state_;
-  }
-
   virtual void TranslatePage(const std::string& translate_script,
                              const std::string& source_lang,
                              const std::string& target_lang) OVERRIDE {}
 
   virtual void RevertTranslation() OVERRIDE {}
 
   virtual bool IsOffTheRecord() OVERRIDE { return false; }
 
   virtual const std::string& GetContentsMimeType() OVERRIDE {
     return kHtmlMimeType;
@@ skipping 81 matching lines @@
 
   // Translate.
   language_state.SetCurrentLanguage("en");
   EXPECT_TRUE(language_state.IsPageTranslated());
   EXPECT_TRUE(driver->on_is_page_translated_changed_called());
 
   // Translate feature must be enabled after an actual translation.
   EXPECT_TRUE(language_state.translate_enabled());
   EXPECT_TRUE(driver->on_translate_enabled_changed_called());
 }