Clean up PlatformThread.

webrtc/modules/video_render/mac/video_render_nsopengl.h

 /*
  *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 12 matching lines @@
 #include <map>
 
 #include "webrtc/base/thread_annotations.h"
 #include "webrtc/modules/video_render/video_render_defines.h"
 
 #import "webrtc/modules/video_render/mac/cocoa_full_screen_window.h"
 #import "webrtc/modules/video_render/mac/cocoa_render_view.h"
 
 class Trace;
 
+namespace rtc {
+class PlatformThread;
+}  // namespace rtc
+
 namespace webrtc {
 class EventTimerWrapper;
-class PlatformThread;
 class VideoRenderNSOpenGL;
 class CriticalSectionWrapper;
 
 class VideoChannelNSOpenGL : public VideoRenderCallback {
 public:
     VideoChannelNSOpenGL(NSOpenGLContext *nsglContext, int iId, VideoRenderNSOpenGL* owner);
     virtual ~VideoChannelNSOpenGL();
 
     // A new frame is delivered
     virtual int DeliverFrame(const VideoFrame& videoFrame);
@@ skipping 113 matching lines @@
     int RenderOffScreenBuffers();
     int DisplayBuffers();
 
 private: // variables
 
 
     CocoaRenderView* _windowRef;
     bool _fullScreen;
     int _id;
     CriticalSectionWrapper& _nsglContextCritSec;
-    rtc::scoped_ptr<PlatformThread> _screenUpdateThread;
+    // TODO(pbos): Remove scoped_ptr and use PlatformThread directly.
+    rtc::scoped_ptr<rtc::PlatformThread> _screenUpdateThread;
     EventTimerWrapper* _screenUpdateEvent;
     NSOpenGLContext* _nsglContext;
     NSOpenGLContext* _nsglFullScreenContext;
     CocoaFullScreenWindow* _fullScreenWindow;
     Rect _windowRect; // The size of the window
     int _windowWidth;
     int _windowHeight;
     std::map<int, VideoChannelNSOpenGL*> _nsglChannels;
     std::multimap<int, int> _zOrderToChannel;
     bool _renderingIsPaused;
     NSView* _windowRefSuperView;
     NSRect _windowRefSuperViewFrame;
 };
 
 }  // namespace webrtc
 
 #endif   // WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_MAC_VIDEO_RENDER_NSOPENGL_H_
 #endif   // COCOA_RENDERING