WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/print_preview/print_preview_destination_search_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.
 
 var ROOT_PATH = '../../../../../';
 
 GEN_INCLUDE(
         [ROOT_PATH + 'chrome/test/data/webui/polymer_browser_test_base.js']);
 
 /**
  * Test fixture for DestinationSearch of Print Preview.
  * @constructor
  * @extends {PolymerTest}
  */
 function PrintPreviewDestinationSearchTest() {}
 
 PrintPreviewDestinationSearchTest.prototype = {
   __proto__: PolymerTest.prototype,
 
   /** @override */
   browsePreload: 'chrome://print',
 
   /** @override */
   runAccessibilityChecks: false,
 
   /** @override */
   extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
-      ROOT_PATH + 'chrome/test/data/webui/settings/test_browser_proxy.js',
+      ROOT_PATH + 'chrome/test/data/webui/test_browser_proxy.js',
       'native_layer_stub.js',
     ]),
 
 };
 
 TEST_F('PrintPreviewDestinationSearchTest', 'Select', function() {
   var self = this;
 
   suite('DestinationSearchTest', function() {
     var root_;
@@ skipping 223 matching lines @@
       // Simulate a click.
       dest.onActivate_();
 
       // Verify that the destination has been selected.
       assertEquals(printerId, destinationStore_.selectedDestination.id);
     });
   });
 
   mocha.run();
 });