Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/filters/gpu_video_decoder.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 MEDIA_FILTERS_GPU_VIDEO_DECODER_H_
 #define MEDIA_FILTERS_GPU_VIDEO_DECODER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 30 matching lines @@
 // GPU-accelerated video decoder implementation.  Relies on
 // AcceleratedVideoDecoderMsg_Decode and friends.  Can be created on any thread
 // but must be accessed and destroyed on GpuVideoAcceleratorFactories's
 // GetMessageLoop().
 class MEDIA_EXPORT GpuVideoDecoder
     : public VideoDecoder,
       public VideoDecodeAccelerator::Client {
  public:
   GpuVideoDecoder(GpuVideoAcceleratorFactories* factories,
                   const RequestSurfaceCB& request_surface_cb,
-                  scoped_refptr<MediaLog> media_log);
+                  MediaLog* media_log);
 
   // VideoDecoder implementation.
   std::string GetDisplayName() const override;
   void Initialize(const VideoDecoderConfig& config,
                   bool low_delay,
                   CdmContext* cdm_context,
                   const InitCB& init_cb,
                   const OutputCB& output_cb) override;
   void Decode(const scoped_refptr<DecoderBuffer>& buffer,
               const DecodeCB& decode_cb) override;
@@ skipping 103 matching lines @@
   void CompleteInitialization(int surface_id);
 
   bool needs_bitstream_conversion_;
 
   GpuVideoAcceleratorFactories* factories_;
 
   // For requesting a suface to render to. If this is null the VDA will return
   // normal video frames and not render them to a surface.
   RequestSurfaceCB request_surface_cb_;
 
-  scoped_refptr<MediaLog> media_log_;
+  MediaLog* media_log_;
 
   // Populated during Initialize() (on success) and unchanged until an error
   // occurs.
   std::unique_ptr<VideoDecodeAccelerator> vda_;
 
   // Whether |vda_->Initialize()| has been called. This is used to avoid
   // calling Initialize() again while a deferred initialization is in progress.
   bool vda_initialized_;
 
   InitCB init_cb_;
@@ skipping 76 matching lines @@
   // Bound to factories_->GetMessageLoop().
   // NOTE: Weak pointers must be invalidated before all other member variables.
   base::WeakPtrFactory<GpuVideoDecoder> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuVideoDecoder);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_FILTERS_GPU_VIDEO_DECODER_H_