Ensure current volume is current

This sets the current volume when a session is switched over to
remote playback. Otherwise it won't be current until it changes and
sends an update.

Change-Id: Iabedb24a34e88308e7e3c56a2b1ab279a17b466b
diff --git a/media/java/android/media/session/MediaSession.java b/media/java/android/media/session/MediaSession.java
index eac6809..1670097 100644
--- a/media/java/android/media/session/MediaSession.java
+++ b/media/java/android/media/session/MediaSession.java
@@ -290,6 +290,7 @@
         try {
             mBinder.setPlaybackToRemote(volumeProvider.getVolumeControl(),
                     volumeProvider.getMaxVolume());
+            mBinder.setCurrentVolume(volumeProvider.onGetCurrentVolume());
         } catch (RemoteException e) {
             Log.wtf(TAG, "Failure in setPlaybackToRemote.", e);
         }