Add base:: to string16s in win8/.

win8/metro_driver/chrome_app_view.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 "win8/metro_driver/stdafx.h"
 #include "win8/metro_driver/chrome_app_view.h"
 
 #include <corewindow.h>
 #include <windows.applicationModel.datatransfer.h>
 #include <windows.foundation.h>
@@ skipping 1070 matching lines @@
                           &result)) {
     VPLOG(1) << "Failed to retrieve tab info from chrome.";
     return E_FAIL;
   }
 
   if (!current_tab_info.title || !current_tab_info.url) {
     DVLOG(1) << "Failed to retrieve tab info from chrome.";
     return E_FAIL;
   }
 
-  string16 current_title(current_tab_info.title);
-  string16 current_url(current_tab_info.url);
+  base::string16 current_title(current_tab_info.title);
+  base::string16 current_url(current_tab_info.url);
 
   LocalFree(current_tab_info.title);
   LocalFree(current_tab_info.url);
 
   mswr::ComPtr<winapp::DataTransfer::IDataPackagePropertySet> data_properties;
   hr = data_package->get_Properties(&data_properties);
 
   mswrw::HString title;
   title.Attach(MakeHString(current_title));
   data_properties->put_Title(title.Get());
@@ skipping 104 matching lines @@
   CheckHR(core_app.As(&app_exit));
   globals.app_exit = app_exit.Detach();
 }
 
 IFACEMETHODIMP
 ChromeAppViewFactory::CreateView(winapp::Core::IFrameworkView** view) {
   globals.view = mswr::Make<ChromeAppView>().Detach();
   *view = globals.view;
   return (*view) ? S_OK :  E_OUTOFMEMORY;
 }