Update some uses of char16 to use the base:: namespace.

remoting/host/win/launch_process_with_token.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 REMOTING_HOST_WIN_LAUNCH_PROCESS_WITH_TOKEN_H_
 #define REMOTING_HOST_WIN_LAUNCH_PROCESS_WITH_TOKEN_H_
 
 #include <windows.h>
 #include <string>
 
@@ skipping 20 matching lines @@
 // The other parameters are passed directly to CreateProcessAsUser().
 // If |inherit_handles| is true |g_inherit_handles_lock| should be taken while
 // any inheritable handles are open.
 bool LaunchProcessWithToken(const base::FilePath& binary,
                             const CommandLine::StringType& command_line,
                             HANDLE user_token,
                             SECURITY_ATTRIBUTES* process_attributes,
                             SECURITY_ATTRIBUTES* thread_attributes,
                             bool inherit_handles,
                             DWORD creation_flags,
-                            const char16* desktop_name,
+                            const base::char16* desktop_name,
                             base::win::ScopedHandle* process_out,
                             base::win::ScopedHandle* thread_out);
 
 } // namespace remoting
 
 #endif  // REMOTING_HOST_WIN_LAUNCH_PROCESS_WITH_TOKEN_H_