bluetooth: Rename to WebBluetooth in preparation for new WebBluetooth flag.

Source/modules/bluetooth/BluetoothUUIDs.idl

 // 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.
 
 // https://webbluetoothcg.github.io/web-bluetooth/#idl-def-bluetoothuuids
 
 // Implement BluetoothUUIDs interface: https://crbug.com/476969
 
 [
     GarbageCollected,
     NoInterfaceObject,
-    RuntimeEnabled=Bluetooth,
+    RuntimeEnabled=WebBluetooth,
 ] interface BluetoothUUIDs {
     // readonly attribute BluetoothUUIDsService        service;
     // readonly attribute BluetoothUUIDsCharacteristic characteristic;
     // readonly attribute BluetoothUUIDsDescriptor     descriptor;
     // UUID canonicalUUID (unsigned long alias);
 };