Add Bluetooth settings dialog tests

chrome/test/data/webui/settings/fake_bluetooth_private.js

 // Copyright 2015 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.
 
 /**
  * @fileoverview Fake implementation of chrome.bluetoothPrivate for testing.
  */
 cr.define('settings', function() {
   /**
    * Fake of the chrome.bluetooth API.
    * @param {!Bluetooth} bluetoothApi
    * @constructor
    * @implements {BluetoothPrivate}
    */
   function FakeBluetoothPrivate(bluetoothApi) {
     /** @private {!Bluetooth} */ this.bluetoothApi_ = bluetoothApi;
+
+    /** @type {!Set<string>} */ this.connectedDevices_ = new Set();
+
+    /** @type {!Object<!chrome.bluetoothPrivate.SetPairingResponseOptions>} */
+    this.pairingResponses_ = {};
   }
 
   FakeBluetoothPrivate.prototype = {
     /** @override */
     setAdapterState: function(state, opt_callback) {
-      this.bluetoothApi_.enabled = state.powered;
+      this.bluetoothApi_.adapterState = state;
       if (opt_callback)
         setTimeout(opt_callback);
     },
 
     /** @override */
-    setPairingResponse: assertNotReached,
+    setPairingResponse: function(options, opt_callback) {
+      this.pairingResponses_[options.device.address] = options;
+      if (opt_callback)
+        setTimeout(opt_callback);
+    },
 
     /** @override */
     disconnectAll: assertNotReached,
 
     /** @override */
     forgetDevice: assertNotReached,
 
     /** @override */
     setDiscoveryFilter: assertNotReached,
 
     /** @override */
-    connect: assertNotReached,
+    connect: function(address, opt_callback) {
+      this.connectedDevices_.add(address);
+      if (opt_callback)
+        setTimeout(opt_callback);
+    },
 
     /** @override */
     pair: assertNotReached,
 
     /** @type {!FakeChromeEvent} */
     onPairing: new FakeChromeEvent(),
   };
 
   return {FakeBluetoothPrivate: FakeBluetoothPrivate};
 });