WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/test_browser_proxy.js

 // Copyright 2016 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.
 
-cr.define('settings', function() {
+cr.define('test', function() {
   /**
    * A base class for all test browser proxies to inherit from. Provides helper
    * methods for allowing tests to track when a method was called.
    *
    * Subclasses are responsible for calling |methodCalled|, when a method is
    * called, which will trigger callers of |whenCalled| to get notified.
    * For example:
    * --------------------------------------------------------------------------
    * var MyTestBrowserProxy = function() {
    *   TestBrowserProxy.call(this, ['myMethod']);
@@ skipping 64 matching lines @@
       this.resolverMap_.forEach(function(value, methodName) {
         this.resolverMap_.set(methodName, new PromiseResolver());
       }.bind(this));
     },
   };
 
   return {
     TestBrowserProxy: TestBrowserProxy,
   };
 });