Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/formats/webm/webm_content_encodings_client.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 "media/formats/webm/webm_content_encodings_client.h"
 
 #include "base/logging.h"
 #include "media/formats/webm/webm_constants.h"
 
 namespace media {
 
-WebMContentEncodingsClient::WebMContentEncodingsClient(
-    const scoped_refptr<MediaLog>& media_log)
+WebMContentEncodingsClient::WebMContentEncodingsClient(MediaLog* media_log)
     : media_log_(media_log),
       content_encryption_encountered_(false),
-      content_encodings_ready_(false) {
-}
+      content_encodings_ready_(false) {}
 
 WebMContentEncodingsClient::~WebMContentEncodingsClient() {
 }
 
 const ContentEncodings& WebMContentEncodingsClient::content_encodings() const {
   DCHECK(content_encodings_ready_);
   return content_encodings_;
 }
 
 WebMParserClient* WebMContentEncodingsClient::OnListStart(int id) {
@@ skipping 237 matching lines @@
     cur_content_encoding_->SetEncryptionKeyId(data, size);
     return true;
   }
 
   // This should not happen if WebMListParser is working properly.
   DCHECK(false);
   return false;
 }
 
 }  // namespace media