bluetooth: Require frame to be connected for writValue to succeed.

third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTCharacteristic.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 BluetoothRemoteGATTCharacteristic_h
 #define BluetoothRemoteGATTCharacteristic_h
 
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/dom/ActiveDOMObject.h"
 #include "core/dom/DOMArrayPiece.h"
@@ skipping 79 matching lines @@
 
   DEFINE_ATTRIBUTE_EVENT_LISTENER(characteristicvaluechanged);
 
  protected:
   // EventTarget overrides.
   void addedEventListener(const AtomicString& eventType,
                           RegisteredEventListener&) override;
 
  private:
   friend class ReadValueCallback;
+  friend class WriteValueCallback;
 
   BluetoothRemoteGATTServer* gatt() { return m_service->device()->gatt(); }
 
   std::unique_ptr<WebBluetoothRemoteGATTCharacteristicInit> m_webCharacteristic;
   Member<BluetoothRemoteGATTService> m_service;
   bool m_stopped;
   Member<BluetoothCharacteristicProperties> m_properties;
   Member<DOMDataView> m_value;
 };
 
 }  // namespace blink
 
 #endif  // BluetoothRemoteGATTCharacteristic_h