linux (and some posix): multiprocess plugins compiling.

chrome/common/ipc_channel_posix.h

 // Copyright (c) 2008 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 CHROME_COMMON_IPC_CHANNEL_POSIX_H_
 #define CHROME_COMMON_IPC_CHANNEL_POSIX_H_
 
 #include "chrome/common/ipc_channel.h"
 
 #include <sys/socket.h>  // for CMSG macros
 
 #include <queue>
 #include <string>
 #include <vector>
 
 #include "base/message_loop.h"
 #include "chrome/common/file_descriptor_set_posix.h"
 
 namespace IPC {
 
 class Channel::ChannelImpl : public MessageLoopForIO::Watcher {
  public:
   // Mirror methods of Channel, see ipc_channel.h for description.
   ChannelImpl(const std::wstring& channel_id, Mode mode, Listener* listener);
   ~ChannelImpl() { Close(); }
   bool Connect();
   void Close();
   void set_listener(Listener* listener) { listener_ = listener; }
   bool Send(Message* message);
-  void GetClientFileDescriptorMapping(int *src_fd, int *dest_fd);
+  void GetClientFileDescriptorMapping(int *src_fd, int *dest_fd) const;
   void OnClientConnected();
 
  private:
   const std::wstring PipeName(const std::wstring& channel_id) const;
   bool CreatePipe(const std::wstring& channel_id, Mode mode);
 
   bool ProcessIncomingMessages();
   bool ProcessOutgoingMessages();
 
   void OnFileCanReadWithoutBlocking(int fd);
@@ skipping 62 matching lines @@
   bool processing_incoming_;
 
   ScopedRunnableMethodFactory<ChannelImpl> factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChannelImpl);
 };
 
 }  // namespace IPC
 
 #endif  // CHROME_COMMON_IPC_CHANNEL_POSIX_H_