[Android] A prototype of the interactive media notification.

content/browser/android/web_contents_observer_proxy.cc

 // Copyright 2015 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/android/web_contents_observer_proxy.h"
 
 #include <string>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 269 matching lines @@
     NavigationController::ReloadType reload_type) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj(java_observer_);
   ScopedJavaLocalRef<jstring> jstring_url(
       ConvertUTF8ToJavaString(env, url.spec()));
 
   Java_WebContentsObserverProxy_didStartNavigationToPendingEntry(
       env, obj.obj(), jstring_url.obj());
 }
 
+void WebContentsObserverProxy::MediaSessionStateChanged(bool is_controllable,
+                                                        bool is_suspended) {
+  JNIEnv* env = AttachCurrentThread();
+
+  ScopedJavaLocalRef<jobject> obj(java_observer_);
+
+  Java_WebContentsObserverProxy_mediaSessionStateChanged(
+      env, obj.obj(), is_controllable, is_suspended);
+}
+
 bool RegisterWebContentsObserverProxy(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 }  // namespace content