WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/settings/test_search_engines_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_search', function() {
   /**
    * A test version of SearchEnginesBrowserProxy. Provides helper methods
    * for allowing tests to know when a method was called, as well as
    * specifying mock responses.
    *
    * @constructor
    * @implements {settings.SearchEnginesBrowserProxy}
-   * @extends {settings.TestBrowserProxy}
+   * @extends {TestBrowserProxy}
    */
   var TestSearchEnginesBrowserProxy = function() {
-    settings.TestBrowserProxy.call(this, [
+    TestBrowserProxy.call(this, [
       'getSearchEnginesList',
       'removeSearchEngine',
       'searchEngineEditCancelled',
       'searchEngineEditCompleted',
       'searchEngineEditStarted',
       'setDefaultSearchEngine',
       'validateSearchEngineInput',
       'getHotwordInfo',
       'setHotwordSearchEnabled',
       'getGoogleNowAvailability',
@@ skipping 13 matching lines @@
       errorMessage: '',
       userName: 'user@test.org',
       historyEnabled: false,
     };
 
     /** @type {boolean} */
     this.googleNowAvailable = true;
   };
 
   TestSearchEnginesBrowserProxy.prototype = {
-    __proto__: settings.TestBrowserProxy.prototype,
+    __proto__: TestBrowserProxy.prototype,
 
     /** @override */
     setDefaultSearchEngine: function(modelIndex) {
       this.methodCalled('setDefaultSearchEngine', modelIndex);
     },
 
     /** @override */
     removeSearchEngine: function(modelIndex) {
       this.methodCalled('removeSearchEngine', modelIndex);
     },
@@ skipping 84 matching lines @@
       url: "https://search.foo.com/search?p=%s",
       urlLocked: false,
     };
   }
 
   return {
     createSampleSearchEngine: createSampleSearchEngine,
     TestSearchEnginesBrowserProxy: TestSearchEnginesBrowserProxy,
   };
 });