Move LanguageState to the translate component

chrome/browser/translate/translate_manager_browsertest.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 <algorithm>
 #include <set>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 335 matching lines @@
       TranslateBubbleModel::ViewState view_state,
       TranslateErrors::Type error_type) OVERRIDE {
     if (model_) {
       model_->SetViewState(view_state);
       return;
     }
 
     TranslateTabHelper* translate_tab_helper =
         TranslateTabHelper::FromWebContents(web_contents);
     std::string source_language =
-        translate_tab_helper->language_state().original_language();
+        translate_tab_helper->GetLanguageState().original_language();
     std::string target_language = TranslateManager::GetLanguageCode(
         g_browser_process->GetApplicationLocale());
     scoped_ptr<TranslateUIDelegate> ui_delegate(
         new TranslateUIDelegate(web_contents,
                                 source_language,
                                 target_language));
     model_.reset(
         new TranslateBubbleModelImpl(view_state, ui_delegate.Pass()));
   }
 
@@ skipping 1230 matching lines @@
                                   source);
 
   GURL french_url = ui_test_utils::GetTestUrl(
       base::FilePath(), base::FilePath(FILE_PATH_LITERAL("french_page.html")));
   ui_test_utils::NavigateToURL(browser(), french_url);
   fr_language_detected_signal.Wait();
   LanguageDetectionDetails details;
   EXPECT_TRUE(fr_language_detected_signal.GetDetailsFor(
         source.map_key(), &details));
   EXPECT_EQ("fr", details.adopted_language);
-  EXPECT_EQ("fr", translate_tab_helper->language_state().original_language());
+  EXPECT_EQ("fr", translate_tab_helper->GetLanguageState().original_language());
 }
 
 #if defined (OS_WIN)
 #define MAYBE_TranslateSessionRestore DISABLED_TranslateSessionRestore
 #else
 #define MAYBE_TranslateSessionRestore TranslateSessionRestore
 #endif
 IN_PROC_BROWSER_TEST_F(InProcessBrowserTest, MAYBE_TranslateSessionRestore) {
   content::WebContents* current_web_contents =
       browser()->tab_strip_model()->GetActiveWebContents();
   content::Source<content::WebContents> source(current_web_contents);
 
   ui_test_utils::WindowedNotificationObserverWithDetails<
     LanguageDetectionDetails>
       fr_language_detected_signal(chrome::NOTIFICATION_TAB_LANGUAGE_DETERMINED,
                                   source);
   fr_language_detected_signal.Wait();
 }