bluetooth: Invalidate characteristics when disconnecting

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/BluetoothRemoteGATTService.h"
 #include "platform/heap/Handle.h"
@@ skipping 32 matching lines @@
   // Constructs a new BluetoothRemoteGATTCharacteristic object if there was no
   // characteristic with the same instance id and adds it to the map.
   // Otherwise returns the BluetoothRemoteGATTCharacteristic object already in
   // the map.
   BluetoothRemoteGATTCharacteristic*
   getOrCreateBluetoothRemoteGATTCharacteristic(
       ExecutionContext*,
       std::unique_ptr<WebBluetoothRemoteGATTCharacteristicInit>,
       BluetoothRemoteGATTService*);
 
+  // Returns true if a BluetoothRemoteGATTCharacteristic with
+  // |characteristicInstanceId| is in the map.
+  bool containsCharacteristic(const String& characteristicInstanceId);
+
   // Removes all Attributes from the map.
-  // TODO(crbug.com/654950): Remove characteristics and descriptors when
-  // implemented.
+  // 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;
 };
 
 }  // namespace blink
 
 #endif  // BluetoothAttributeInstanceMap_h