Implement WebBluetooth getDescriptor[s]

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 63 matching lines @@
   ExecutionContext* getExecutionContext() const;
 
   // Interface required by garbage collection.
   DECLARE_VIRTUAL_TRACE();
 
   // IDL exposed interface:
   BluetoothRemoteGATTService* service() { return m_service; }
   String uuid() { return m_webCharacteristic->uuid; }
   BluetoothCharacteristicProperties* properties() { return m_properties; }
   DOMDataView* value() const { return m_value; }
+  ScriptPromise getDescriptor(ScriptState*,
+                              const StringOrUnsignedLong& descriptor,
+                              ExceptionState&);
+  ScriptPromise getDescriptors(ScriptState*, ExceptionState&);
+  ScriptPromise getDescriptors(ScriptState*,
+                               const StringOrUnsignedLong& descriptor,
+                               ExceptionState&);
   ScriptPromise readValue(ScriptState*);
   ScriptPromise writeValue(ScriptState*, const DOMArrayPiece&);
   ScriptPromise startNotifications(ScriptState*);
   ScriptPromise stopNotifications(ScriptState*);
 
   DEFINE_ATTRIBUTE_EVENT_LISTENER(characteristicvaluechanged);
 
  protected:
   // EventTarget overrides.
   void addedEventListener(const AtomicString& eventType,
                           RegisteredEventListener&) override;
 
  private:
-  friend class ReadValueCallback;
-  friend class WriteValueCallback;
+  friend class CharacteristicReadValueCallback;
+  friend class CharacteristicWriteValueCallback;
   friend class NotificationsCallback;
+  friend class GetDescriptorsCallback;
+  friend class BluetoothRemoteGATTDescriptor;
 
   BluetoothRemoteGATTServer* gatt() { return m_service->device()->gatt(); }
 
+  ScriptPromise getDescriptorsImpl(ScriptState*,
+                                   mojom::blink::WebBluetoothGATTQueryQuantity,
+                                   const String& descriptorUUID = String());
+
   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