bluetooth: Invalidate characteristics when disconnecting

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

 // 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.
 
 #include "modules/bluetooth/BluetoothAttributeInstanceMap.h"
 
 #include "modules/bluetooth/BluetoothDevice.h"
 #include "modules/bluetooth/BluetoothRemoteGATTService.h"
 #include "public/platform/modules/bluetooth/WebBluetoothRemoteGATTCharacteristicInit.h"
 #include "public/platform/modules/bluetooth/WebBluetoothRemoteGATTService.h"
@@ skipping 40 matching lines @@
 
   if (!characteristic) {
     characteristic = BluetoothRemoteGATTCharacteristic::create(
         context, std::move(webCharacteristic), service);
     m_characteristicIdToObject.add(characteristicInstanceId, characteristic);
   }
 
   return characteristic;
 }
 
+bool BluetoothAttributeInstanceMap::containsCharacteristic(
+    const String& characteristicInstanceId) {
+  return m_characteristicIdToObject.contains(characteristicInstanceId);
+}
+
 void BluetoothAttributeInstanceMap::Clear() {
   m_serviceIdToObject.clear();
+  m_characteristicIdToObject.clear();
 }
 
 DEFINE_TRACE(BluetoothAttributeInstanceMap) {
   visitor->trace(m_device);
   visitor->trace(m_serviceIdToObject);
   visitor->trace(m_characteristicIdToObject);
 }
 
 }  // namespace blink