Fix NamedProxyLauncher on Windows.

ipc/ipc_channel.h

 // Copyright (c) 2011 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 IPC_IPC_CHANNEL_H_
 #define IPC_IPC_CHANNEL_H_
 #pragma once
 
 #include "base/compiler_specific.h"
 #include "ipc/ipc_channel_handle.h"
@@ skipping 153 matching lines @@
 
   // Returns true if the peer process' effective user id can be determined, in
   // which case the supplied client_euid is updated with it.
   bool GetClientEuid(uid_t* client_euid) const;
 
   // Closes any currently connected socket, and returns to a listening state
   // for more connections.
   void ResetToAcceptingConnectionState();
 #endif  // defined(OS_POSIX) && !defined(OS_NACL)
 
+  // Returns true if a named server channel is initialized on the given channel
+  // ID. Even if true, the server may have already accepted a connection.
+  static bool IsNamedServerInitialized(const std::string& channel_id);
+
  protected:
   // Used in Chrome by the TestSink to provide a dummy channel implementation
   // for testing. TestSink overrides the "interesting" functions in Channel so
   // no actual implementation is needed. This will cause un-overridden calls to
   // segfault. Do not use outside of test code!
   Channel() : channel_impl_(0) { }
 
  private:
   // PIMPL to which all channel calls are delegated.
   class ChannelImpl;
   ChannelImpl *channel_impl_;
 
   // The Hello message is internal to the Channel class.  It is sent
   // by the peer when the channel is connected.  The message contains
   // just the process id (pid).  The message has a special routing_id
   // (MSG_ROUTING_NONE) and type (HELLO_MESSAGE_TYPE).
   enum {
     HELLO_MESSAGE_TYPE = kuint16max  // Maximum value of message type (uint16),
                                      // to avoid conflicting with normal
                                      // message types, which are enumeration
                                      // constants starting from 0.
   };
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_H_