Add base:: to string16s in chrome/.

chrome/test/base/in_process_browser_test_browsertest.cc

 // 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.
 
 #include <string.h>
 
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
@@ skipping 21 matching lines @@
 // WebContents observer that can detect provisional load failures.
 class LoadFailObserver : public content::WebContentsObserver {
  public:
   explicit LoadFailObserver(content::WebContents* contents)
       : content::WebContentsObserver(contents),
         failed_load_(false),
         error_code_(net::OK) { }
 
   virtual void DidFailProvisionalLoad(
       int64 frame_id,
-      const string16& frame_unique_name,
+      const base::string16& frame_unique_name,
       bool is_main_frame,
       const GURL& validated_url,
       int error_code,
-      const string16& error_description,
+      const base::string16& error_description,
       content::RenderViewHost* render_view_host) OVERRIDE {
     failed_load_ = true;
     error_code_ = static_cast<net::Error>(error_code);
     validated_url_ = validated_url;
   }
 
   bool failed_load() const { return failed_load_; }
   net::Error error_code() const { return error_code_; }
   const GURL& validated_url() const { return validated_url_; }
 
@@ skipping 20 matching lines @@
     GURL url(kURLs[i]);
     LoadFailObserver observer(contents);
     ui_test_utils::NavigateToURL(browser(), url);
     EXPECT_TRUE(observer.failed_load());
     EXPECT_EQ(net::ERR_NOT_IMPLEMENTED, observer.error_code());
     EXPECT_EQ(url, observer.validated_url());
   }
 }
 
 }  // namespace