Add base:: to string16s in win8/.

win8/delegate_execute/delegate_execute_operation.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 WIN8_DELEGATE_EXECUTE_DELEGATE_EXECUTE_OPERATION_H_
 #define WIN8_DELEGATE_EXECUTE_DELEGATE_EXECUTE_OPERATION_H_
 
 #include <windows.h>
 #include <atldef.h>
 
@@ skipping 31 matching lines @@
 
   DelegateExecuteOperation();
   ~DelegateExecuteOperation();
 
   bool Init(const CommandLine* cmd_line);
 
   OperationType operation_type() const {
     return operation_type_;
   }
 
-  const string16& relaunch_flags() const {
+  const base::string16& relaunch_flags() const {
     return relaunch_flags_;
   }
 
-  const string16& mutex() const {
+  const base::string16& mutex() const {
     return mutex_;
   }
 
   // Returns the process id of the parent or 0 on failure.
   DWORD GetParentPid() const;
 
   const base::FilePath& shortcut() const {
     return relaunch_shortcut_;
   }
 
  private:
   OperationType operation_type_;
-  string16 relaunch_flags_;
+  base::string16 relaunch_flags_;
   base::FilePath relaunch_shortcut_;
-  string16 mutex_;
+  base::string16 mutex_;
 
   DISALLOW_COPY_AND_ASSIGN(DelegateExecuteOperation);
 };
 
 }  // namespace delegate_execute
 
 #endif  // WIN8_DELEGATE_EXECUTE_DELEGATE_EXECUTE_OPERATION_H_