Convert mojo::system::ChannelEndpointClient to use our new refcounting stuff (instead of base's).

mojo/edk/system/message_pipe_test_utils.h

 // Copyright 2014 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 MOJO_EDK_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_
 #define MOJO_EDK_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_
 
 #include "mojo/edk/embedder/simple_platform_support.h"
 #include "mojo/edk/system/channel.h"
 #include "mojo/edk/system/ref_ptr.h"
 #include "mojo/edk/system/test_utils.h"
 #include "mojo/edk/test/multiprocess_test_helper.h"
 #include "mojo/edk/test/test_io_thread.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 namespace system {
 
 class Channel;
 class ChannelEndpoint;
 class MessagePipe;
 
 namespace test {
 
-MojoResult WaitIfNecessary(scoped_refptr<MessagePipe> mp,
+MojoResult WaitIfNecessary(MessagePipe* mp,
                            MojoHandleSignals signals,
                            HandleSignalsState* signals_state);
 
 class ChannelThread {
  public:
   explicit ChannelThread(embedder::PlatformSupport* platform_support);
   ~ChannelThread();
 
   void Start(embedder::ScopedPlatformHandle platform_handle,
              RefPtr<ChannelEndpoint>&& channel_endpoint);
@@ skipping 32 matching lines @@
 
   MOJO_DISALLOW_COPY_AND_ASSIGN(MultiprocessMessagePipeTestBase);
 };
 #endif
 
 }  // namespace test
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_MESSAGE_PIPE_TEST_UTILS_H_