Convert MediaLog from being ref counted to owned by WebMediaPlayer.

media/blink/webencryptedmediaclient_impl.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/blink/webencryptedmediaclient_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 71 matching lines @@
 
   const std::string uma_name_;
   bool is_request_reported_;
   bool is_support_reported_;
 };
 
 WebEncryptedMediaClientImpl::WebEncryptedMediaClientImpl(
     base::Callback<bool(void)> are_secure_codecs_supported_cb,
     CdmFactory* cdm_factory,
     MediaPermission* media_permission,
-    const scoped_refptr<MediaLog>& media_log)
+    MediaLog* media_log)
     : are_secure_codecs_supported_cb_(are_secure_codecs_supported_cb),
       cdm_factory_(cdm_factory),
       key_system_config_selector_(KeySystems::GetInstance(), media_permission),
       media_log_(media_log),
       weak_factory_(this) {
   DCHECK(cdm_factory_);
 }
 
 WebEncryptedMediaClientImpl::~WebEncryptedMediaClientImpl() {
 }
@@ skipping 66 matching lines @@
 
   // Return a per-frame singleton so that UMA reports will be once-per-frame.
   std::string uma_name = GetKeySystemNameForUMA(key_system_ascii);
   std::unique_ptr<Reporter>& reporter = reporters_[uma_name];
   if (!reporter)
     reporter = base::MakeUnique<Reporter>(uma_name);
   return reporter.get();
 }
 
 }  // namespace media