Convert string16 to base::string16 in content.

content/test/test_web_contents.h

 // 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.
 
 #ifndef CONTENT_TEST_TEST_WEB_CONTENTS_H_
 #define CONTENT_TEST_TEST_WEB_CONTENTS_H_
 
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/common/page_transition_types.h"
 #include "content/public/test/web_contents_tester.h"
@@ skipping 79 matching lines @@
   // to |ExpectSetHistoryLengthAndPrune()|.
   virtual void SetHistoryLengthAndPrune(const SiteInstance* site_instance,
                                         int history_length,
                                         int32 min_page_id) OVERRIDE;
 
   void TestDidFinishLoad(int64 frame_id, const GURL& url, bool is_main_frame);
   void TestDidFailLoadWithError(int64 frame_id,
                                 const GURL& url,
                                 bool is_main_frame,
                                 int error_code,
-                                const string16& error_description);
+                                const base::string16& error_description);
 
  protected:
   // The deprecated WebContentsTester still needs to subclass this.
   explicit TestWebContents(BrowserContext* browser_context);
 
  private:
   // WebContentsImpl overrides
   virtual void CreateNewWindow(
       int route_id,
       int main_frame_route_id,
@@ skipping 17 matching lines @@
   bool expect_set_history_length_and_prune_;
   scoped_refptr<const SiteInstanceImpl>
     expect_set_history_length_and_prune_site_instance_;
   int expect_set_history_length_and_prune_history_length_;
   int32 expect_set_history_length_and_prune_min_page_id_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_TEST_WEB_CONTENTS_H_