Media Session API: use MediaMetadata in the browser process.

content/content_jni.gypi

 # Copyright (c) 2012 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.
 
 {
   # TODO(jrg): Update this action and other jni generators to only
   # require specifying the java directory and generate the rest.
   # TODO(jrg): when doing the above, make sure we support multiple
   # output directories (e.g. browser/jni and common/jni if needed).
   'sources': [
@@ skipping 24 matching lines @@
     'public/android/java/src/org/chromium/content/browser/ServiceRegistrar.java',
     'public/android/java/src/org/chromium/content/browser/ServiceRegistry.java',
     'public/android/java/src/org/chromium/content/browser/ScreenOrientationProvider.java',
     'public/android/java/src/org/chromium/content/browser/SpeechRecognition.java',
     'public/android/java/src/org/chromium/content/browser/TimeZoneMonitor.java',
     'public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java',
     'public/android/java/src/org/chromium/content/browser/framehost/NavigationControllerImpl.java',
     'public/android/java/src/org/chromium/content/browser/webcontents/WebContentsImpl.java',
     'public/android/java/src/org/chromium/content/browser/webcontents/WebContentsObserverProxy.java',
     'public/android/java/src/org/chromium/content_public/browser/LoadUrlParams.java',
+    'public/android/java/src/org/chromium/content_public/common/MediaMetadata.java',
    ],
   'variables': {
     'jni_gen_package': 'content',
   },
   'includes': [ '../build/jni_generator.gypi' ],
 }