media: Plumb MediaLog to MojoVideoDecoderService.

media/mojo/services/mojo_media_log.h

+// 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.
+
+#ifndef MEDIA_MOJO_SERVICES_MOJO_MEDIA_LOG_H_
+#define MEDIA_MOJO_SERVICES_MOJO_MEDIA_LOG_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "media/base/media_log.h"
+#include "media/mojo/interfaces/media_log.mojom.h"
+#include "mojo/public/cpp/bindings/associated_interface_ptr.h"
+
+namespace media {
+
+class MojoMediaLog final : public MediaLog {
+ public:
+  // TODO(sandersd): Template on Ptr type to support non-associated.
+  explicit MojoMediaLog(
+      mojo::AssociatedInterfacePtr<mojom::MediaLog> remote_media_log);
+  ~MojoMediaLog() final;
+
+  // MediaLog implementation.
+  void AddEvent(std::unique_ptr<MediaLogEvent> event) override;
+
+ private:
+  mojo::AssociatedInterfacePtr<mojom::MediaLog> remote_media_log_;
+
+  DISALLOW_COPY_AND_ASSIGN(MojoMediaLog);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_MOJO_SERVICES_MOJO_MEDIA_LOG_H_