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

ipc/ipc_channel_nacl.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_NACL_H_
 #define IPC_IPC_CHANNEL_NACL_H_
 
 #include <deque>
 #include <memory>
 #include <string>
@@ skipping 25 matching lines @@
                     public internal::ChannelReader {
  public:
   // Mirror methods of Channel, see ipc_channel.h for description.
   ChannelNacl(const IPC::ChannelHandle& channel_handle,
               Mode mode,
               Listener* listener);
   ~ChannelNacl() override;
 
   // Channel implementation.
   base::ProcessId GetPeerPID() const override;
-  base::ProcessId GetSelfPID() const override;
   bool Connect() override;
   void Close() override;
   bool Send(Message* message) override;
 
   // Posted to the main thread by ReaderThreadRunner.
   void DidRecvMsg(std::unique_ptr<MessageContents> contents);
   void ReadDidFail();
 
  private:
   class ReaderThreadRunner;
@@ skipping 59 matching lines @@
   std::deque<linked_ptr<Message> > output_queue_;
 
   base::WeakPtrFactory<ChannelNacl> weak_ptr_factory_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ChannelNacl);
 };
 
 }  // namespace IPC
 
 #endif  // IPC_IPC_CHANNEL_NACL_H_