EDK: Convert remaining scoped_ptr -> std::unique_ptr in //mojo/edk/system.

mojo/edk/system/channel_endpoint_client.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_CHANNEL_ENDPOINT_CLIENT_H_
 #define MOJO_EDK_SYSTEM_CHANNEL_ENDPOINT_CLIENT_H_
 
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "mojo/edk/system/system_impl_export.h"
 #include "mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 namespace system {
 
 class MessageInTransit;
 
 // Interface for receivers of messages from |ChannelEndpoint| (hence from
 // |Channel|). |port| is simply the value passed to |ChannelEndpoint| on
@@ skipping 34 matching lines @@
   friend class base::RefCountedThreadSafe<ChannelEndpointClient>;
 
  private:
   MOJO_DISALLOW_COPY_AND_ASSIGN(ChannelEndpointClient);
 };
 
 }  // namespace system
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CHANNEL_ENDPOINT_CLIENT_H_