[Mojo] Move JS bindings out of public

mojo/public/bindings/sample/sample_service_unittests.js

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 define([
     "console",
-    "mojo/public/bindings/js/test/hexdump",
+    "mojo/apps/js/test/hexdump",
     "gin/test/expect",
     "mojom/sample_service"
   ], function(console, hexdump, expect, sample) {
 
   var global = this;
 
   // Set this variable to true to print the binary message in hex.
   var dumpMessageAsHex = false;
 
   function makeFoo() {
@@ skipping 89 matching lines @@
 
   var receiver = new SimpleMessageReceiver();
   var serviceProxy = new sample.ServiceProxy(receiver);
 
   var foo = makeFoo();
   checkFoo(foo);
 
   var port = 10;
   serviceProxy.frobinate(foo, true, port);
 });