WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/settings/test_privacy_page_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.
 
 /**
  * @constructor
  * @extends {TestBrowserProxy}
  * @implements {settings.PrivacyPageBrowserProxy}
  */
 function TestPrivacyPageBrowserProxy() {
-  settings.TestBrowserProxy.call(this, [
+  TestBrowserProxy.call(this, [
     'getMetricsReporting',
     'getSafeBrowsingExtendedReporting',
     'setMetricsReportingEnabled',
     'setSafeBrowsingExtendedReportingEnabled',
     'showManageSSLCertificates',
   ]);
 }
 
 TestPrivacyPageBrowserProxy.prototype = {
-  __proto__: settings.TestBrowserProxy.prototype,
+  __proto__: TestBrowserProxy.prototype,
 
   /** @type {!MetricsReporting} */
   metricsReporting: {
     enabled: true,
     managed: true,
   },
 
   /** @override */
   getMetricsReporting: function() {
     this.methodCalled('getMetricsReporting');
@@ skipping 14 matching lines @@
   getSafeBrowsingExtendedReporting: function() {
     this.methodCalled('getSafeBrowsingExtendedReporting');
     return Promise.resolve(true);
   },
 
   /** @override */
   setSafeBrowsingExtendedReportingEnabled: function(enabled) {
     this.methodCalled('setSafeBrowsingExtendedReportingEnabled', enabled);
   },
 };