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

Source/modules/bluetooth/BluetoothDevice.idl

 // Copyright 2014 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-bluetoothdevice
 
 // Implement BluetoothDevice interface: http://crbug.com/421668
 
 enum VendorIDSource {
     "bluetooth",
     "usb"
 };
 
 typedef DOMString UUID;
 
 [
     GarbageCollected,
-    RuntimeEnabled=Bluetooth,
+    RuntimeEnabled=WebBluetooth,
 ] interface BluetoothDevice
 // Implement ServiceEventHandlers interface: http://crbug.com/421670
 // : ServiceEventHandlers 
 {
 // Implement BluetoothDevice interface: http://crbug.com/421668
     readonly    attribute DOMString                  instanceID;
     readonly    attribute DOMString?                 name;
 //    readonly    attribute BluetoothAdvertisingData   adData;
     readonly    attribute unsigned long?             deviceClass;
     readonly    attribute VendorIDSource?            vendorIDSource;
     readonly    attribute unsigned long?             vendorID;
     readonly    attribute unsigned long?             productID;
     readonly    attribute unsigned long?             productVersion;
     readonly    attribute boolean                    paired;
 //    readonly    attribute BluetoothGATTRemoteServer? gattServer;
     readonly    attribute UUID[]                     uuids;
     [CallWith=ScriptState] Promise<BluetoothGATTRemoteServer> connectGATT ();
 };