bluetooth: Only add new devices, connected devices and devices that changed.

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

 'use strict';
 
 // Bluetooth UUID constants:
 // Services:
 var blacklist_test_service_uuid = "611c954a-263b-4f4a-aab6-01ddb953f985";
 var request_disconnection_service_uuid = "01d7d889-7451-419f-aeb8-d65e7b9277af";
 // Characteristics:
 var blacklist_exclude_reads_characteristic_uuid =
   "bad1c9a2-9a5b-4015-8b60-1579bbbf2135";
 var request_disconnection_characteristic_uuid =
@@ skipping 180 matching lines @@
 // Parses add-device(name)=id lines in
 // testRunner.getBluetoothManualChooserEvents() output, and exposes the name->id
 // mapping.
 class AddDeviceEventSet {
   constructor() {
     this._idsByName = new Map();
     this._addDeviceRegex = /^add-device\(([^)]+)\)=(.+)$/;
   }
   assert_add_device_event(event, description) {
     let match = this._addDeviceRegex.exec(event);
-    assert_true(!!match, event + "isn't an add-device event: " + description);
+    assert_true(!!match, event + " isn't an add-device event: " + description);
     this._idsByName.set(match[1], match[2]);
   }
   has(name) {
     return this._idsByName.has(name);
   }
   get(name) {
     return this._idsByName.get(name);
   }
 }
 
@@ skipping 122 matching lines @@
     filters: [{ services: services, name: 'Name' }],
     optionalServices: ['heart_rate']
   }, {
     filters: [{ services: services, namePrefix: 'Pre' }],
     optionalServices: ['heart_rate']
   }, {
     filters: [{ services: services, name: 'Name', namePrefix: 'Pre' }],
     optionalServices: ['heart_rate']
   }];
 }