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

mojo/edk/system/proxy_message_pipe_endpoint.cc

 // Copyright 2013 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 "mojo/edk/system/proxy_message_pipe_endpoint.h"
 
 #include <string.h>
 
+#include <utility>
+
 #include "base/logging.h"
 #include "mojo/edk/system/channel_endpoint.h"
 #include "mojo/edk/system/local_message_pipe_endpoint.h"
 #include "mojo/edk/system/message_pipe_dispatcher.h"
 
 namespace mojo {
 namespace system {
 
 ProxyMessagePipeEndpoint::ProxyMessagePipeEndpoint(
     ChannelEndpoint* channel_endpoint)
@@ skipping 18 matching lines @@
 
 bool ProxyMessagePipeEndpoint::OnPeerClose() {
   DetachIfNecessary();
   return false;
 }
 
 // Note: We may have to enqueue messages even when our (local) peer isn't open
 // -- it may have been written to and closed immediately, before we were ready.
 // This case is handled in |Run()| (which will call us).
 void ProxyMessagePipeEndpoint::EnqueueMessage(
-    scoped_ptr<MessageInTransit> message) {
+    std::unique_ptr<MessageInTransit> message) {
   DCHECK(channel_endpoint_);
-  bool ok = channel_endpoint_->EnqueueMessage(message.Pass());
+  bool ok = channel_endpoint_->EnqueueMessage(std::move(message));
   LOG_IF(WARNING, !ok) << "Failed to write enqueue message to channel";
 }
 
 void ProxyMessagePipeEndpoint::Close() {
   DetachIfNecessary();
 }
 
 void ProxyMessagePipeEndpoint::DetachIfNecessary() {
   if (channel_endpoint_) {
     channel_endpoint_->DetachFromClient();
     channel_endpoint_ = nullptr;
   }
 }
 
 }  // namespace system
 }  // namespace mojo