VideoDecodeAccelerator now SupportsWeakPtr instead of being RefCountedThreadSafe.

content/renderer/media/pepper_platform_video_decoder_impl.cc

Index: content/renderer/media/pepper_platform_video_decoder_impl.cc
diff --git a/content/renderer/media/pepper_platform_video_decoder_impl.cc b/content/renderer/media/pepper_platform_video_decoder_impl.cc
index 62e5d2396a229b6f4115927d6e7f60dca2311321..b00f36c7a7f59b4f8b399873bfa307d1cd5d5833 100644
--- a/content/renderer/media/pepper_platform_video_decoder_impl.cc
+++ b/content/renderer/media/pepper_platform_video_decoder_impl.cc
@@ -26,7 +26,7 @@ PlatformVideoDecoderImpl::~PlatformVideoDecoderImpl() {}
 
 bool PlatformVideoDecoderImpl::Initialize(media::VideoCodecProfile profile) {
   // TODO(vrk): Support multiple decoders.
-  if (decoder_)
+  if (decoder_.get())
     return true;
 
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
@@ -43,43 +43,43 @@ bool PlatformVideoDecoderImpl::Initialize(media::VideoCodecProfile profile) {
   DCHECK_EQ(channel->state(), GpuChannelHost::kConnected);
 
   // Send IPC message to initialize decoder in GPU process.
-  decoder_ = channel->CreateVideoDecoder(
-      command_buffer_route_id_, profile, this);
+  decoder_.reset(channel->CreateVideoDecoder(
+      command_buffer_route_id_, profile, this));
   return decoder_.get() != NULL;
 }
 
 void PlatformVideoDecoderImpl::Decode(const BitstreamBuffer& bitstream_buffer) {
-  DCHECK(decoder_);
+  DCHECK(decoder_.get());
   decoder_->Decode(bitstream_buffer);
 }
 
 void PlatformVideoDecoderImpl::AssignPictureBuffers(
     const std::vector<media::PictureBuffer>& buffers) {
-  DCHECK(decoder_);
+  DCHECK(decoder_.get());
   decoder_->AssignPictureBuffers(buffers);
 }
 
 void PlatformVideoDecoderImpl::ReusePictureBuffer(
     int32 picture_buffer_id) {
-  DCHECK(decoder_);
+  DCHECK(decoder_.get());
   decoder_->ReusePictureBuffer(picture_buffer_id);
 }
 
 void PlatformVideoDecoderImpl::Flush() {
-  DCHECK(decoder_);
+  DCHECK(decoder_.get());
   decoder_->Flush();
 }
 
 void PlatformVideoDecoderImpl::Reset() {
-  DCHECK(decoder_);
+  DCHECK(decoder_.get());
   decoder_->Reset();
 }
 
 void PlatformVideoDecoderImpl::Destroy() {
-  DCHECK(decoder_);
-  decoder_->Destroy();
+  DCHECK(decoder_.get());
+  decoder_.release()->Destroy();
   client_ = NULL;
-  decoder_ = NULL;
+  delete this;
 }
 
 void PlatformVideoDecoderImpl::NotifyError(