VideoDecodeAccelerator now SupportsWeakPtr instead of being RefCountedThreadSafe.

content/renderer/media/pepper_platform_video_decoder_impl.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 "content/renderer/media/pepper_platform_video_decoder_impl.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "content/common/child_process.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/renderer/render_thread_impl.h"
 
 using media::BitstreamBuffer;
 
 PlatformVideoDecoderImpl::PlatformVideoDecoderImpl(
     VideoDecodeAccelerator::Client* client,
     int32 command_buffer_route_id)
     : client_(client),
       command_buffer_route_id_(command_buffer_route_id) {
   DCHECK(client);
 }
 
 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();
 
   // This is not synchronous, but subsequent IPC messages will be buffered, so
   // it is okay to immediately send IPC messages through the returned channel.
   GpuChannelHost* channel =
       render_thread->EstablishGpuChannelSync(
           content::CAUSE_FOR_GPU_LAUNCH_VIDEODECODEACCELERATOR_INITIALIZE);
 
   if (!channel)
     return false;
 
   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();
+void PlatformVideoDecoderImpl::Destroy(bool pass_ownership) {
+  DCHECK(decoder_.get());
+  scoped_ptr<VideoDecodeAccelerator> self(pass_ownership ? this : NULL);
+  decoder_.release()->Destroy(true);
   client_ = NULL;
-  decoder_ = NULL;
 }
 
 void PlatformVideoDecoderImpl::NotifyError(
     VideoDecodeAccelerator::Error error) {
   DCHECK(RenderThreadImpl::current());
   client_->NotifyError(error);
 }
 
 void PlatformVideoDecoderImpl::ProvidePictureBuffers(
     uint32 requested_num_of_buffers,
@@ skipping 26 matching lines @@
 
 void PlatformVideoDecoderImpl::NotifyFlushDone() {
   DCHECK(RenderThreadImpl::current());
   client_->NotifyFlushDone();
 }
 
 void PlatformVideoDecoderImpl::NotifyResetDone() {
   DCHECK(RenderThreadImpl::current());
   client_->NotifyResetDone();
 }