[Android] A prototype of the interactive media notification.

content/browser/android/web_contents_observer_proxy.cc

Index: content/browser/android/web_contents_observer_proxy.cc
diff --git a/content/browser/android/web_contents_observer_proxy.cc b/content/browser/android/web_contents_observer_proxy.cc
index c4cb1b726bb65dde2cb165ab40113008b3d36d84..34bf4fb3032ec267fe4347eac7b34a2f5158d38a 100644
--- a/content/browser/android/web_contents_observer_proxy.cc
+++ b/content/browser/android/web_contents_observer_proxy.cc
@@ -288,6 +288,16 @@ void 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);
 }