Remove IPC::Endpoint.

ipc/ipc_test_sink.cc

 // 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.
 
 #include "ipc/ipc_test_sink.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "build/build_config.h"
@@ skipping 16 matching lines @@
 
 bool TestSink::Connect() {
   NOTIMPLEMENTED();
   return false;
 }
 
 void TestSink::Close() {
   NOTIMPLEMENTED();
 }
 
-base::ProcessId TestSink::GetPeerPID() const {
-  NOTIMPLEMENTED();
-  return base::ProcessId();
-}
-
 bool TestSink::OnMessageReceived(const Message& msg) {
   for (auto& observer : filter_list_) {
     if (observer.OnMessageReceived(msg))
       return true;
   }
 
   // No filter handled the message, so store it.
   messages_.push_back(Message(msg));
   return true;
 }
@@ skipping 32 matching lines @@
 
 void TestSink::AddFilter(Listener* filter) {
   filter_list_.AddObserver(filter);
 }
 
 void TestSink::RemoveFilter(Listener* filter) {
   filter_list_.RemoveObserver(filter);
 }
 
 }  // namespace IPC