player_x11 : change X/GL thread to message loop for injecting task

media/tools/player_x11/x11_video_renderer.h

 // Copyright (c) 2010 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 MEDIA_TOOLS_PLAYER_X11_X11_VIDEO_RENDERER_H_
 #define MEDIA_TOOLS_PLAYER_X11_X11_VIDEO_RENDERER_H_
 
 #include <X11/Xlib.h>
 
 #include "base/lock.h"
@@ skipping 13 matching lines @@
 
   // This method is called to paint the current video frame to the assigned
   // window.
   void Paint();
 
   // media::FilterFactoryImpl2 Implementation.
   static bool IsMediaFormatSupported(const media::MediaFormat& media_format);
 
   static X11VideoRenderer* instance() { return instance_; }
 
+  void set_glx_thread_message_loop(MessageLoop* message_loop) {
+    glx_thread_message_loop_ = message_loop;
+  }
+
+  MessageLoop* glx_thread_message_loop() {
+    return glx_thread_message_loop_;
+  }
+
  protected:
   // VideoRendererBase implementation.
   virtual bool OnInitialize(media::VideoDecoder* decoder);
   virtual void OnStop();
   virtual void OnFrameAvailable();
 
  private:
   // Only allow to be deleted by reference counting.
   friend class scoped_refptr<X11VideoRenderer>;
   virtual ~X11VideoRenderer();
 
   int width_;
   int height_;
   bool uses_egl_image_;
 
   Display* display_;
   Window window_;
 
   // Image in heap that contains the RGBA data of the video frame.
   XImage* image_;
 
-  // Protects |new_frame_|.
-  Lock lock_;
-  bool new_frame_;
-
   // Picture represents the paint target. This is a picture located
   // in the server.
   unsigned long picture_;
 
   bool use_render_;
 
+  MessageLoop* glx_thread_message_loop_;
   static X11VideoRenderer* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(X11VideoRenderer);
 };
 
 #endif  // MEDIA_TOOLS_PLAYER_X11_X11_VIDEO_RENDERER_H_