bluetooth: Subscribe to notifications

third_party/WebKit/Source/modules/bluetooth/BluetoothSupplement.h

 // 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.
 
 #ifndef BluetoothSupplement_h
 #define BluetoothSupplement_h
 
 #include "core/frame/LocalFrame.h"
 
 namespace blink {
@@ skipping 12 matching lines @@
     static const char* supplementName();
 
     static void provideTo(LocalFrame&, WebBluetooth*);
 
     // Returns the WebBluetooth attached to the frame.
     static WebBluetooth* from(LocalFrame*);
 
     // Returns the WebBluetooth attached to the frame if the frame exists.
     // Otherwise returns nullptr.
     static WebBluetooth* fromScriptState(ScriptState*);
+    // Returns the WebBluetooth attached to the execution context.
+    static WebBluetooth* fromExecutionContext(ExecutionContext*);
 
     DECLARE_VIRTUAL_TRACE();
 
 private:
     explicit BluetoothSupplement(WebBluetooth*);
 
     WebBluetooth* m_bluetooth;
 };
 
 } // namespace blink
 
 #endif // BluetoothRoutingId_h