Bug Fix: WebMediaPlayerMS Crashes

content/renderer/media/webmediaplayer_ms_compositor.cc

 // Copyright 2015 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 "content/renderer/media/webmediaplayer_ms_compositor.h"
 
 #include <stdint.h>
 
 #include "base/command_line.h"
 #include "base/hash.h"
@@ skipping 254 matching lines @@
 void WebMediaPlayerMSCompositor::PutCurrentFrame() {
   DVLOG(3) << __FUNCTION__;
   base::AutoLock auto_lock(current_frame_lock_);
   current_frame_used_by_compositor_ = true;
 }
 
 void WebMediaPlayerMSCompositor::StartRendering() {
   DCHECK(thread_checker_.CalledOnValidThread());
   compositor_task_runner_->PostTask(
       FROM_HERE, base::Bind(&WebMediaPlayerMSCompositor::StartRenderingInternal,
-                            base::Unretained(this)));
+                            AsWeakPtr()));
 }
 
 void WebMediaPlayerMSCompositor::StartRenderingInternal() {
   DCHECK(compositor_task_runner_->BelongsToCurrentThread());
   stopped_ = false;
 
   if (video_frame_provider_client_)
     video_frame_provider_client_->StartRendering();
 }
 
 void WebMediaPlayerMSCompositor::StopRendering() {
   DCHECK(thread_checker_.CalledOnValidThread());
   compositor_task_runner_->PostTask(
       FROM_HERE, base::Bind(&WebMediaPlayerMSCompositor::StopRenderingInternal,
-                            base::Unretained(this)));
+                            AsWeakPtr()));
 }
 
 void WebMediaPlayerMSCompositor::StopRenderingInternal() {
   DCHECK(compositor_task_runner_->BelongsToCurrentThread());
   stopped_ = true;
 
   // It is possible that the video gets paused and then resumed. We need to
   // reset VideoRendererAlgorithm, otherwise, VideoRendererAlgorithm will think
   // there is a very long frame in the queue and then make totally wrong
   // frame selection.
@@ skipping 82 matching lines @@
   }
 
   if (!rendering_frame_buffer_) {
     rendering_frame_buffer_.reset(new media::VideoRendererAlgorithm(
         base::Bind(&WebMediaPlayerMSCompositor::MapTimestampsToRenderTimeTicks,
                    base::Unretained(this))));
   }
 }
 
 }  // namespace content