WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/settings/settings_main_test.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_main_page', function() {
   /**
    * Extending TestBrowserProxy even though SearchManager is not a browser proxy
    * itself. Essentially TestBrowserProxy can act as a "proxy" for any external
    * dependency, not just "browser proxies" (and maybe should be renamed to
    * TestProxy).
    *
    * @implements {SearchManager}
-   * @extends {settings.TestBrowserProxy}
+   * @extends {test.TestBrowserProxy}
    */
   var TestSearchManager = function() {
-    settings.TestBrowserProxy.call(this, [
+    test.TestBrowserProxy.call(this, [
       'search',
     ]);
 
     /** @private {boolean} */
     this.matchesFound_ = true;
 
     /** @private {?settings.SearchRequest} */
     this.searchRequest_ = null;
   }
 
   TestSearchManager.prototype = {
-    __proto__: settings.TestBrowserProxy.prototype,
+    __proto__: test.TestBrowserProxy.prototype,
 
     /**
      * @param {boolean} matchesFound
      */
     setMatchesFound: function(matchesFound) {
       this.matchesFound_ = matchesFound;
     },
 
     /** @override */
     search: function(text, page) {
@@ skipping 245 matching lines @@
 
         return assertPageVisibility('block', 'block');
       });
     });
   }
 
   return {
     registerTests: registerTests,
   };
 });