Implement WebBluetooth getDescriptor[s]

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

 // Copyright 2016 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 BluetoothAttributeInstanceMap_h
 #define BluetoothAttributeInstanceMap_h
 
 #include "modules/bluetooth/BluetoothRemoteGATTCharacteristic.h"
+#include "modules/bluetooth/BluetoothRemoteGATTDescriptor.h"
 #include "modules/bluetooth/BluetoothRemoteGATTService.h"
 #include "platform/heap/Handle.h"
 #include "platform/heap/Heap.h"
 #include <memory>
 
 namespace blink {
 
 class BluetoothDevice;
 class ExecutionContext;
 
@@ skipping 27 matching lines @@
   BluetoothRemoteGATTCharacteristic*
   getOrCreateBluetoothRemoteGATTCharacteristic(
       ExecutionContext*,
       std::unique_ptr<WebBluetoothRemoteGATTCharacteristicInit>,
       BluetoothRemoteGATTService*);
 
   // Returns true if a BluetoothRemoteGATTCharacteristic with
   // |characteristicInstanceId| is in the map.
   bool containsCharacteristic(const String& characteristicInstanceId);
 
+  // Constructs a new BluetoothRemoteGATTDescriptor object if there was no
+  // descriptor with the same instance id and adds it to the map.
+  // Otherwise returns the BluetoothRemoteGATTDescriptor object already in
+  // the map.
+  BluetoothRemoteGATTDescriptor* getOrCreateBluetoothRemoteGATTDescriptor(
+      std::unique_ptr<WebBluetoothRemoteGATTDescriptorInit>,
+      BluetoothRemoteGATTCharacteristic*);
+
+  // Returns true if a BluetoothRemoteGATTDescriptor with
+  // |descriptorInstanceId| is in the map.
+  bool containsDescriptor(const String& descriptorInstanceId);
+
   // Removes all Attributes from the map.
   // TODO(crbug.com/654950): Remove descriptors when implemented.
   void Clear();
 
   DECLARE_VIRTUAL_TRACE();
 
  private:
   // BluetoothDevice that owns this map.
   Member<BluetoothDevice> m_device;
   // Map of service instance ids to objects.
   HeapHashMap<String, Member<BluetoothRemoteGATTService>> m_serviceIdToObject;
   // Map of characteristic instance ids to objects.
   HeapHashMap<String, Member<BluetoothRemoteGATTCharacteristic>>
       m_characteristicIdToObject;
+  // Map of descriptor instance ids to objects.
+  HeapHashMap<String, Member<BluetoothRemoteGATTDescriptor>>
+      m_descriptorIdToObject;
 };
 
 }  // namespace blink
 
 #endif  // BluetoothAttributeInstanceMap_h