WebUI: Move test_browser_proxy.js one level up.

chrome/test/data/webui/md_user_manager/test_profile_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.
 
 /**
  * The mock signin.ProfileBrowserProxy.
  *
  * @constructor
  * @implements {signin.ProfileBrowserProxy}
- * @extends {settings.TestBrowserProxy}
+ * @extends {TestBrowserProxy}
  */
 var TestProfileBrowserProxy = function() {
-  settings.TestBrowserProxy.call(this, [
+  TestBrowserProxy.call(this, [
     'getAvailableIcons',
     'getSignedInUsers',
     'launchGuestUser',
     'createProfile',
     'cancelCreateProfile',
     'initializeUserManager',
     'launchUser',
     'getExistingSupervisedUsers',
     'areAllProfilesLocked',
   ]);
 
   /** @private {!Array<!AvatarIcon>} */
   this.icons_ = [];
 
   /** @private {!Array<SignedInUser>} */
   this.signedInUsers_ = [];
 
   /** @private {!ProfileInfo} */
   this.defaultProfileInfo_ = {};
 
   /** @private {!Array<SupervisedUser>} */
   this.existingSupervisedUsers_ = [];
 
   /** @private {boolean} */
   this.allProfilesLocked_ = false;
 };
 
 TestProfileBrowserProxy.prototype = {
-  __proto__: settings.TestBrowserProxy.prototype,
+  __proto__: TestBrowserProxy.prototype,
 
   /**
    * @param {!Array<!AvatarIcon>} icons
    */
   setIcons: function(icons) {
     this.icons_ = icons;
   },
 
   /**
    * @param {!Array<SignedInUser>} signedInUsers
@@ skipping 69 matching lines @@
     this.methodCalled('getExistingSupervisedUsers');
     return Promise.resolve(this.existingSupervisedUsers_);
   },
 
   /** @override */
   areAllProfilesLocked: function() {
     this.methodCalled('areAllProfilesLocked');
     return Promise.resolve(this.allProfilesLocked_);
   },
 };