bluetooth: Implement simulatePreconnectedPeripheral.

third_party/WebKit/LayoutTests/bluetooth/requestDevice/name-empty-device-from-name-empty-filter.html

Index: third_party/WebKit/LayoutTests/bluetooth/requestDevice/name-empty-device-from-name-empty-filter.html
diff --git a/third_party/WebKit/LayoutTests/bluetooth/requestDevice/name-empty-device-from-name-empty-filter.html b/third_party/WebKit/LayoutTests/bluetooth/requestDevice/name-empty-device-from-name-empty-filter.html
index bf2bfbde0527d321cab77914835a65e7edf9fa17..8e417f0c9bf737fc4daaabcaae7c948587fd9ef5 100644
--- a/third_party/WebKit/LayoutTests/bluetooth/requestDevice/name-empty-device-from-name-empty-filter.html
+++ b/third_party/WebKit/LayoutTests/bluetooth/requestDevice/name-empty-device-from-name-empty-filter.html
@@ -2,16 +2,15 @@
 <script src="../../resources/testharness.js"></script>
 <script src="../../resources/testharnessreport.js"></script>
 <script src="../../resources/bluetooth/bluetooth-helpers.js"></script>
+<script src="../../resources/mojo-helpers.js"></script>
+<script src="../../resources/bluetooth/web-bluetooth-test.js"></script>
 <script>
 'use strict';
 promise_test(() => {
-  return setBluetoothFakeAdapter('EmptyNameHeartRateAdapter')
-  .then(() => requestDeviceWithKeyDown({
-     filters: [{name: ''}],
-     optionalServices: ['generic_access']}))
-  .then(device => {
-    assert_equals(device.name, '');
-  })
+  return setUpPreconnectedDevice({name: ''})
+    .then(() => requestDeviceWithKeyDown({filters: [{name: ''}]}))
+    .then(device => {
+      assert_equals(device.name, '');
+    });
 }, 'An empty name device can be obtained by empty name filter.');
 </script>
-