media: Plumb MediaLog to MojoVideoDecoderService.

media/mojo/clients/mojo_media_log_service.cc

+// Copyright 2017 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/mojo/clients/mojo_media_log_service.h"
+
+#include <memory>
+
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "media/base/media_log_event.h"
+
+namespace media {
+
+MojoMediaLogService::MojoMediaLogService(media::MediaLog* media_log)
+    : media_log_(media_log) {
+  DVLOG(1) << __func__;
+  DCHECK(media_log_);
+}
+
+MojoMediaLogService::~MojoMediaLogService() {
+  DVLOG(1) << __func__;
+}
+
+void MojoMediaLogService::AddEvent(const media::MediaLogEvent& event) {
+  DVLOG(1) << __func__;
+
+  // Make a copy so that we can transfer ownership to |media_log_|.
+  std::unique_ptr<media::MediaLogEvent> modified_event =
+      base::MakeUnique<media::MediaLogEvent>(event);
+
+  // |id| is player-unique per-process, but the remote side does not know the
+  // correct value (nor would we necessarily trust it). Overwrite with the
+  // correct value.
+  modified_event->id = media_log_->id();
+
+  media_log_->AddEvent(std::move(modified_event));
+}
+
+}  // namespace media