PPAPI: Make blocking completion callbacks work.

webkit/plugins/ppapi/ppb_video_decoder_impl.h

 // 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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPB_VIDEO_DECODER_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_VIDEO_DECODER_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 21 matching lines @@
                               public media::VideoDecodeAccelerator::Client {
  public:
   virtual ~PPB_VideoDecoder_Impl();
   // See PPB_VideoDecoder_Dev::Create.  Returns 0 on failure to create &
   // initialize.
   static PP_Resource Create(PP_Instance instance,
                             PP_Resource graphics_context,
                             PP_VideoDecoder_Profile profile);
 
   // PPB_VideoDecoder_API implementation.
-  virtual int32_t Decode(const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
-                         PP_CompletionCallback callback) OVERRIDE;
+  virtual int32_t Decode(
+      const PP_VideoBitstreamBuffer_Dev* bitstream_buffer,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual void AssignPictureBuffers(
       uint32_t no_of_buffers, const PP_PictureBuffer_Dev* buffers) OVERRIDE;
   virtual void ReusePictureBuffer(int32_t picture_buffer_id) OVERRIDE;
-  virtual int32_t Flush(PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t Reset(PP_CompletionCallback callback) OVERRIDE;
+  virtual int32_t Flush(
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t Reset(
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
   virtual void Destroy() OVERRIDE;
 
   // media::VideoDecodeAccelerator::Client implementation.
   virtual void ProvidePictureBuffers(uint32 requested_num_of_buffers,
                                      const gfx::Size& dimensions,
                                      uint32 texture_target) OVERRIDE;
   virtual void DismissPictureBuffer(int32 picture_buffer_id) OVERRIDE;
   virtual void PictureReady(const media::Picture& picture) OVERRIDE;
   virtual void NotifyInitializeDone() OVERRIDE;
   virtual void NotifyError(
@@ skipping 16 matching lines @@
   // Reference to the plugin requesting this interface.
   const PPP_VideoDecoder_Dev* ppp_videodecoder_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_VideoDecoder_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_VIDEO_DECODER_IMPL_H_