Add base:: to string16s in android_webview/.

android_webview/browser/aw_login_delegate.h

Index: android_webview/browser/aw_login_delegate.h
diff --git a/android_webview/browser/aw_login_delegate.h b/android_webview/browser/aw_login_delegate.h
index 2542f06b9f8db6e8d5fd5b57c338e701597d7889..f0f8769ddb33aa69951b0976e4aa5dcfa9c50eb3 100644
--- a/android_webview/browser/aw_login_delegate.h
+++ b/android_webview/browser/aw_login_delegate.h
@@ -24,7 +24,8 @@ class AwLoginDelegate :
   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
@@ -34,7 +35,8 @@ class AwLoginDelegate :
   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_;