break dependency between JSPackagerClient.RequestHandler and WebSocketListener

Reviewed By: amnn

Differential Revision: D4810406

fbshipit-source-id: a447bc15c6619921edd7adf0b3d1d93ae04e2e43

ReactAndroid/src/main/java/com/facebook/react/packagerconnection/RequestHandler.java

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc. All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the LICENSE file in the root
+ * directory of this source tree. An additional grant of patent rights can be found in the PATENTS
+ * file in the same directory.
+ */
+
+package com.facebook.react.packagerconnection;
+
+import javax.annotation.Nullable;
+
+public interface RequestHandler {
+  void onRequest(@Nullable Object params, Responder responder);
+  void onNotification(@Nullable Object params);
+}