MD Settings: create a shared handler/browser proxy to control extensions

chrome/test/data/webui/settings/test_extension_control_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
+ * @implements {settings.ExtensionControlBrowserProxy}
+ * @extends {settings.TestBrowserProxy}
+ */
+function TestExtensionControlBrowserProxy() {
+  settings.TestBrowserProxy.call(this, [
+    'disableExtension',
+    'manageExtension',
+  ]);
+}
+
+TestExtensionControlBrowserProxy.prototype = {
+  __proto__: settings.TestBrowserProxy.prototype,
+
+  /** @override */
+  disableExtension: function(extensionId) {
+    this.methodCalled('disableExtension', extensionId);
+  },
+
+  /** @override */
+  manageExtension: function(extensionId) {
+    this.methodCalled('manageExtension', extensionId);
+  },
+};