Use base namespace for string16 in chrome/renderer.

chrome/renderer/translate/translate_helper.h

 // Copyright (c) 2011 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_RENDERER_TRANSLATE_TRANSLATE_HELPER_H_
 #define CHROME_RENDERER_TRANSLATE_TRANSLATE_HELPER_H_
 
 #include <string>
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "chrome/common/translate/translate_errors.h"
 #include "content/public/renderer/render_view_observer.h"
 
 namespace blink {
 class WebDocument;
 class WebFrame;
 }
 
 // This class deals with page translation.
 // There is one TranslateHelper per RenderView.
 
 class TranslateHelper : public content::RenderViewObserver {
  public:
   explicit TranslateHelper(content::RenderView* render_view);
   virtual ~TranslateHelper();
 
   // Informs us that the page's text has been extracted.
-  void PageCaptured(int page_id, const string16& contents);
+  void PageCaptured(int page_id, const base::string16& contents);
 
  protected:
   // The following methods are protected so they can be overridden in
   // unit-tests.
   void OnTranslatePage(int page_id,
                        const std::string& translate_script,
                        const std::string& source_lang,
                        const std::string& target_lang);
   void OnRevertTranslation(int page_id);
 
@@ skipping 104 matching lines @@
   // time from showing infobar to requesting translation.
   base::TimeTicks language_determined_time_;
 
   // Method factory used to make calls to TranslatePageImpl.
   base::WeakPtrFactory<TranslateHelper> weak_method_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TranslateHelper);
 };
 
 #endif  // CHROME_RENDERER_TRANSLATE_TRANSLATE_HELPER_H_