Convert MediaLog from being ref counted to owned by WebMediaPlayer.

content/renderer/pepper/video_decoder_shim.cc

 // Copyright 2014 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/pepper/video_decoder_shim.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
 #include <utility>
@@ skipping 639 matching lines @@
 
  private:
   void OnInitDone(bool success);
   void DoDecode();
   void OnDecodeComplete(media::DecodeStatus status);
   void OnOutputComplete(const scoped_refptr<media::VideoFrame>& frame);
   void OnResetComplete();
 
   // WeakPtr is bound to main_message_loop_. Use only in shim callbacks.
   base::WeakPtr<VideoDecoderShim> shim_;
+  media::MediaLog media_log_;
   std::unique_ptr<media::VideoDecoder> decoder_;
   bool initialized_ = false;
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
   // Queue of decodes waiting for the decoder.
   typedef std::queue<PendingDecode> PendingDecodeQueue;
   PendingDecodeQueue pending_decodes_;
   bool awaiting_decoder_ = false;
   // VideoDecoder returns pictures without information about the decode buffer
   // that generated it, but VideoDecoder implementations used in this class
   // (media::FFmpegVideoDecoder and media::VpxVideoDecoder) always generate
@@ skipping 20 matching lines @@
   DCHECK(!decoder_);
 #if !defined(MEDIA_DISABLE_LIBVPX)
   if (config.codec() == media::kCodecVP9) {
     decoder_.reset(new media::VpxVideoDecoder());
   } else
 #endif
 
 #if !defined(MEDIA_DISABLE_FFMPEG) && !defined(DISABLE_FFMPEG_VIDEO_DECODERS)
   {
     std::unique_ptr<media::FFmpegVideoDecoder> ffmpeg_video_decoder(
-        new media::FFmpegVideoDecoder(
-            make_scoped_refptr(new media::MediaLog())));
+        new media::FFmpegVideoDecoder(&media_log_));
     ffmpeg_video_decoder->set_decode_nalus(true);
     decoder_ = std::move(ffmpeg_video_decoder);
   }
 #elif defined(MEDIA_DISABLE_LIBVPX)
   OnInitDone(false);
   return;
 #endif
 
   // VpxVideoDecoder and FFmpegVideoDecoder support only one pending Decode()
   // request.
@@ skipping 408 matching lines @@
 void VideoDecoderShim::DeleteTexture(uint32_t texture_id) {
   gpu::gles2::GLES2Interface* gles2 = context_provider_->ContextGL();
   gles2->DeleteTextures(1, &texture_id);
 }
 
 void VideoDecoderShim::FlushCommandBuffer() {
   context_provider_->ContextGL()->Flush();
 }
 
 }  // namespace content