Add base:: to string16s in android_webview/.

android_webview/browser/aw_login_delegate.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 ANDROID_WEBVIEW_BROWSER_AW_LOGIN_DELEGATE_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_LOGIN_DELEGATE_H_
 
 #include "android_webview/browser/aw_http_auth_handler_base.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "content/public/browser/resource_dispatcher_host_login_delegate.h"
 
 namespace net {
 class AuthChallengeInfo;
 class URLRequest;
 }
 
 namespace android_webview {
 
 class AwLoginDelegate :
     public content::ResourceDispatcherHostLoginDelegate {
  public:
   AwLoginDelegate(net::AuthChallengeInfo* auth_info,
                   net::URLRequest* request);
 
-  virtual void Proceed(const string16& user, const string16& password);
+  virtual void Proceed(const base::string16& user,
+                       const base::string16& password);
   virtual void Cancel();
 
   // from ResourceDispatcherHostLoginDelegate
   virtual void OnRequestCancelled() OVERRIDE;
 
  private:
   virtual ~AwLoginDelegate();
   void HandleHttpAuthRequestOnUIThread(bool first_auth_attempt);
   void CancelOnIOThread();
-  void ProceedOnIOThread(const string16& user, const string16& password);
+  void ProceedOnIOThread(const base::string16& user,
+                         const base::string16& password);
   void DeleteAuthHandlerSoon();
 
   scoped_ptr<AwHttpAuthHandlerBase> aw_http_auth_handler_;
   scoped_refptr<net::AuthChallengeInfo> auth_info_;
   net::URLRequest* request_;
   int render_process_id_;
   int render_view_id_;
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_LOGIN_DELEGATE_H_