Migrating MediaSession messages to mojo

content/browser/media/android/media_session_service.cc

+// 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.
+
+#include "content/browser/media/android/media_session_service.h"
+
+#include "base/strings/utf_string_conversions.h"
+#include "content/browser/media/android/browser_media_session_manager.h"
+#include "content/browser/media/android/media_web_contents_observer_android.h"
+#include "content/browser/web_contents/web_contents_impl.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/common/media_metadata.h"
+
+namespace content {
+
+MediaSessionService::MediaSessionService(RenderFrameHost* render_frame_host)
+    : render_frame_host_(render_frame_host) {}
+
+MediaSessionService::~MediaSessionService() = default;
+
+// static
+void MediaSessionService::Create(RenderFrameHost* render_frame_host,
+                                 blink::mojom::MediaSessionRequest request) {
+  MediaSessionService* impl = new MediaSessionService(render_frame_host);
+  impl->Bind(std::move(request));
+}
+
+void MediaSessionService::SetMetadata(
+    const base::Optional<content::MediaMetadata>& metadata) {
+  WebContentsImpl* contents = static_cast<WebContentsImpl*>(
+      WebContents::FromRenderFrameHost(render_frame_host_));
+  DCHECK(contents);
+  MediaWebContentsObserverAndroid::FromWebContents(contents)
+      ->GetMediaSessionManager(render_frame_host_)
+      ->OnSetMetadata(0, metadata);
+}
+
+void MediaSessionService::Bind(
+    mojo::InterfaceRequest<blink::mojom::MediaSession> request) {
+  binding_.reset(
+      new mojo::Binding<blink::mojom::MediaSession>(this, std::move(request)));
+}
+
+}  // namespace content