Media Session API: use MediaMetadata in the browser process.

content/common/android/media_metadata_proxy.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/common/android/media_metadata_proxy.h"
+
+#include "base/android/jni_string.h"
+#include "content/public/common/media_metadata.h"
+#include "jni/MediaMetadata_jni.h"
+
+namespace content {
+
+// static
+base::android::ScopedJavaLocalRef<jobject> MediaMetadataProxy::GetJavaObject(
+    JNIEnv* env, const MediaMetadata& metadata) {
+  ScopedJavaLocalRef<jstring> j_title(
+      base::android::ConvertUTF16ToJavaString(env, metadata.title));
+  ScopedJavaLocalRef<jstring> j_artist(
+      base::android::ConvertUTF16ToJavaString(env, metadata.artist));
+  ScopedJavaLocalRef<jstring> j_album(
+      base::android::ConvertUTF16ToJavaString(env, metadata.album));
+
+  return Java_MediaMetadata_create(
+      env, j_title.obj(), j_artist.obj(), j_album.obj());
+}
+
+// static
+bool MediaMetadataProxy::Register(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace content