Flash: Don't lose a reference to the Graphics3D from the VideoDecoder.

ppapi/proxy/ppb_video_decoder_proxy.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 "ppapi/proxy/ppb_video_decoder_proxy.h"
 
 #include "base/logging.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
@@ skipping 43 matching lines @@
   void EndOfBitstreamACK(int32_t buffer_id, int32_t result);
 
   DISALLOW_COPY_AND_ASSIGN(VideoDecoder);
 };
 
 VideoDecoder::VideoDecoder(const HostResource& decoder)
     : PPB_VideoDecoder_Shared(decoder) {
 }
 
 VideoDecoder::~VideoDecoder() {
+  FlushCommandBuffer();
+  PPB_VideoDecoder_Shared::Destroy();
 }
 
 int32_t VideoDecoder::Decode(
     const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
     scoped_refptr<TrackedCallback> callback) {
   EnterResourceNoLock<PPB_Buffer_API>
       enter_buffer(bitstream_buffer->data, true);
   if (enter_buffer.failed())
     return PP_ERROR_BADRESOURCE;
 
@@ skipping 235 matching lines @@
 
 void PPB_VideoDecoder_Proxy::OnMsgResetACK(
     const HostResource& decoder, int32_t result) {
   EnterPluginFromHostResource<PPB_VideoDecoder_API> enter(decoder);
   if (enter.succeeded())
     static_cast<VideoDecoder*>(enter.object())->ResetACK(result);
 }
 
 }  // namespace proxy
 }  // namespace ppapi