Move LanguageState to the translate component

chrome/browser/ui/browser_content_translate_driver_observer.cc

 // 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.
 
-#include "chrome/browser/ui/browser_language_state_observer.h"
+#include "chrome/browser/ui/browser_content_translate_driver_observer.h"
 
-#include "chrome/browser/tab_contents/language_state.h"
 #include "chrome/browser/translate/translate_tab_helper.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "components/translate/core/browser/language_state.h"
 
-BrowserLanguageStateObserver::BrowserLanguageStateObserver(Browser* browser)
-    : browser_(browser) {
+BrowserContentTranslateDriverObserver::BrowserContentTranslateDriverObserver(
+    Browser* browser) : browser_(browser) {
 }
 
-BrowserLanguageStateObserver::~BrowserLanguageStateObserver() {
+BrowserContentTranslateDriverObserver::
+    ~BrowserContentTranslateDriverObserver() {
 }
 
-void BrowserLanguageStateObserver::OnIsPageTranslatedChanged(
+void BrowserContentTranslateDriverObserver::OnIsPageTranslatedChanged(
     content::WebContents* source) {
   if (source == browser_->tab_strip_model()->GetActiveWebContents()) {
     TranslateTabHelper* translate_tab_helper =
         TranslateTabHelper::FromWebContents(source);
-    LanguageState& language_state = translate_tab_helper->language_state();
+    LanguageState& language_state = translate_tab_helper->GetLanguageState();
     browser_->window()->SetTranslateIconToggled(
         language_state.IsPageTranslated());
   }
 }
 
-void BrowserLanguageStateObserver::OnTranslateEnabledChanged(
+void BrowserContentTranslateDriverObserver::OnTranslateEnabledChanged(
     content::WebContents* source) {
   if (source == browser_->tab_strip_model()->GetActiveWebContents())
     browser_->window()->UpdateToolbar(source);
 }