Move Session apis to android.media.session

This is to make it easier to distinguish the new apis from the old
ones.

Change-Id: Ic5eaf65e8bd054a844f87b9118c4bb18f30ac8a7
diff --git a/Android.mk b/Android.mk
index 57091cc..eb288a6 100644
--- a/Android.mk
+++ b/Android.mk
@@ -261,23 +261,23 @@
 	media/java/android/media/IAudioService.aidl \
 	media/java/android/media/IAudioFocusDispatcher.aidl \
 	media/java/android/media/IAudioRoutesObserver.aidl \
-	media/java/android/media/IMediaController.aidl \
-	media/java/android/media/IMediaControllerCallback.aidl \
 	media/java/android/media/IMediaHTTPConnection.aidl \
 	media/java/android/media/IMediaHTTPService.aidl \
 	media/java/android/media/IMediaRouterClient.aidl \
 	media/java/android/media/IMediaRouterService.aidl \
 	media/java/android/media/IMediaScannerListener.aidl \
 	media/java/android/media/IMediaScannerService.aidl \
-	media/java/android/media/IMediaSession.aidl \
-	media/java/android/media/IMediaSessionCallback.aidl \
-	media/java/android/media/IMediaSessionManager.aidl \
 	media/java/android/media/IRemoteControlClient.aidl \
 	media/java/android/media/IRemoteControlDisplay.aidl \
 	media/java/android/media/IRemoteDisplayCallback.aidl \
 	media/java/android/media/IRemoteDisplayProvider.aidl \
 	media/java/android/media/IRemoteVolumeObserver.aidl \
 	media/java/android/media/IRingtonePlayer.aidl \
+	media/java/android/media/session/IMediaController.aidl \
+	media/java/android/media/session/IMediaControllerCallback.aidl \
+	media/java/android/media/session/IMediaSession.aidl \
+	media/java/android/media/session/IMediaSessionCallback.aidl \
+	media/java/android/media/session/IMediaSessionManager.aidl \
 	telephony/java/com/android/internal/telephony/IPhoneStateListener.aidl \
 	telephony/java/com/android/internal/telephony/IPhoneSubInfo.aidl \
 	telephony/java/com/android/internal/telephony/ITelephony.aidl \