Migrating MediaSession messages to mojo

content/browser/media/android/media_session_service_impl.h

+// Copyright 2016 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 CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_SESSION_SERVICE_IMPL_H_
+#define CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_SESSION_SERVICE_IMPL_H_
+
+#include "mojo/public/cpp/bindings/binding.h"
+#include "third_party/WebKit/public/platform/modules/mediasession/media_session.mojom.h"
+
+namespace content {
+
+class RenderFrameHost;
+
+class MediaSessionServiceImpl
+    : public NON_EXPORTED_BASE(blink::mojom::MediaSessionService) {
+ public:
+  ~MediaSessionServiceImpl() override;
+
+  static void Create(
+      RenderFrameHost* render_frame_host,
+      blink::mojom::MediaSessionServiceRequest request);
+
+ private:
+  MediaSessionServiceImpl(RenderFrameHost* render_frame_host);
+
+  void Activate(uint64_t session_id,
+                const ActivateCallback& callback) override;
+  void Deactivate(uint64_t session_id,
+                  const DeactivateCallback& callback) override;
+  void SetMetadata(uint64_t session_id,
+                   blink::mojom::MediaMetadataPtr metadata) override;
+
+  void Bind(mojo::InterfaceRequest<blink::mojom::MediaSessionService> request);
+
+  RenderFrameHost* render_frame_host_;
+
+  // RAII binding of |this| to an MediaSession interface request.
+  // The binding is removed when binding_ is cleared or goes out of scope.
+  std::unique_ptr<mojo::Binding<blink::mojom::MediaSessionService>> binding_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaSessionServiceImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEDIA_ANDROID_MEDIA_SESSION_SERVICE_IMPL_H_