Fix build.

(Broken in change Ib94f795c.)
diff --git a/services/java/com/android/server/MountService.java b/services/java/com/android/server/MountService.java
index 801c86f..05cea46 100644
--- a/services/java/com/android/server/MountService.java
+++ b/services/java/com/android/server/MountService.java
@@ -206,7 +206,7 @@
             if (mUmsEnabled) {
                 if (newUmsNotifyEnabled) {
                     Intent intent = new Intent();
-                    intent.setClass(mContext, com.android.internal.app.UsbStorageStopActivity.class);
+                    intent.setClass(mContext, com.android.internal.app.UsbStorageActivity.class);
                     PendingIntent pi = PendingIntent.getActivity(mContext, 0, intent, 0);
                     setUsbStorageNotification(com.android.internal.R.string.usb_storage_stop_notification_title,
                             com.android.internal.R.string.usb_storage_stop_notification_message,