bluetooth: Implement known_service_uuids for Peripherals.

third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js

Index: third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js
diff --git a/third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js b/third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js
index 08901e571c71394ea2dcdd3f8f1e8e23283ad9cb..97919a8691d3bcc0d269fe6a4832f239646c09ce 100644
--- a/third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js
+++ b/third_party/WebKit/LayoutTests/resources/bluetooth/bluetooth-helpers.js
@@ -423,10 +423,27 @@ function generateRequestDeviceArgsWithServices(services = ['heart_rate']) {
   }];
 }
 
-function setUpPreconnectedDevice({address = '00:00:00:00:00:00', name}) {
+function setUpPreconnectedDevice({
+  address = '00:00:00:00:00:00', name = 'LE Device', knownServiceUUIDs = []}) {
   return navigator.bluetooth.test.simulateCentral({state: 'powered-on'})
     .then(fake_central => fake_central.simulatePreconnectedPeripheral({
       address: address,
-      name: name
+      name: name,
+      knownServiceUUIDs: knownServiceUUIDs,
     }));
 }
+
+function setUpHealthThermometerAndHeartRateDevices() {
+  return navigator.bluetooth.test.simulateCentral({state: 'powered-on'})
+   .then(fake_central => Promise.all([
+     fake_central.simulatePreconnectedPeripheral({
+       address: '09:09:09:09:09:09',
+       name: 'Health Thermometer',
+       knownServiceUUIDs: ['generic_access', 'health_thermometer'],
+     }),
+     fake_central.simulatePreconnectedPeripheral({
+       address: '08:08:08:08:08:08',
+       name: 'Heart Rate',
+       knownServiceUUIDs: ['generic_access', 'heart_rate'],
+     })]));
+}