Remove obsolete methods from IPC::Channel and related classes.

ipc/ipc_channel_proxy.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 IPC_IPC_CHANNEL_PROXY_H_
 #define IPC_IPC_CHANNEL_PROXY_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 220 matching lines @@
   }
 #endif
 
   // Called to clear the pointer to the IPC task runner when it's going away.
   void ClearIPCTaskRunner();
 
   // Endpoint overrides.
   base::ProcessId GetPeerPID() const override;
   void OnSetAttachmentBrokerEndpoint() override;
 
-#if defined(OS_POSIX) && !defined(OS_NACL_SFI)
-  // Calls through to the underlying channel's methods.
-  int GetClientFileDescriptor();
-  base::ScopedFD TakeClientFileDescriptor();
-#endif
-
  protected:
   class Context;
   // A subclass uses this constructor if it needs to add more information
   // to the internal state.
   explicit ChannelProxy(Context* context);
 
 
   // Used internally to hold state that is referenced on the IPC thread.
   class Context : public base::RefCountedThreadSafe<Context>,
                   public Listener {
@@ skipping 170 matching lines @@
   bool did_init_;
 
 #if defined(ENABLE_IPC_FUZZER)
   OutgoingMessageFilter* outgoing_message_filter_;
 #endif
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_PROXY_H_