Cleanup usage of scoped_ptr<> in remoting for C++11

remoting/host/desktop_session_proxy.cc

 // 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.
 
 #include "remoting/host/desktop_session_proxy.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/process/process_handle.h"
 #include "base/memory/shared_memory.h"
@@ skipping 273 matching lines @@
   if (desktop_process_ != base::kNullProcessHandle) {
     base::CloseProcessHandle(desktop_process_);
     desktop_process_ = base::kNullProcessHandle;
   }
 
   shared_buffers_.clear();
 
   // Generate fake responses to keep the video capturer in sync.
   while (pending_capture_frame_requests_) {
     --pending_capture_frame_requests_;
-    PostCaptureCompleted(scoped_ptr<webrtc::DesktopFrame>());
+    PostCaptureCompleted(nullptr);
   }
 }
 
 void DesktopSessionProxy::SetAudioCapturer(
     const base::WeakPtr<IpcAudioCapturer>& audio_capturer) {
   DCHECK(audio_capture_task_runner_->BelongsToCurrentThread());
 
   audio_capturer_ = audio_capturer;
 }
 
 void DesktopSessionProxy::CaptureFrame() {
   if (!caller_task_runner_->BelongsToCurrentThread()) {
     caller_task_runner_->PostTask(
         FROM_HERE, base::Bind(&DesktopSessionProxy::CaptureFrame, this));
     return;
   }
 
   if (desktop_channel_) {
     ++pending_capture_frame_requests_;
     SendToDesktop(new ChromotingNetworkDesktopMsg_CaptureFrame());
   } else {
-    PostCaptureCompleted(scoped_ptr<webrtc::DesktopFrame>());
+    PostCaptureCompleted(nullptr);
   }
 }
 
 void DesktopSessionProxy::SetVideoCapturer(
     const base::WeakPtr<IpcVideoFrameCapturer> video_capturer) {
   DCHECK(video_capture_task_runner_->BelongsToCurrentThread());
 
   video_capturer_ = video_capturer;
 }
 
@@ skipping 244 matching lines @@
 }
 
 // static
 void DesktopSessionProxyTraits::Destruct(
     const DesktopSessionProxy* desktop_session_proxy) {
   desktop_session_proxy->caller_task_runner_->DeleteSoon(FROM_HERE,
                                                          desktop_session_proxy);
 }
 
 }  // namespace remoting