| Index: third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp | 
| diff --git a/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp b/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp | 
| index dde3df2afd038565362397085a5b25020b1684b3..7669ccb13d98f54981810cda3957bbf07ffc36b7 100644 | 
| --- a/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp | 
| +++ b/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp | 
| @@ -71,6 +71,10 @@ BluetoothDevice::getOrCreateBluetoothRemoteGATTDescriptor( | 
| std::move(descriptor), characteristic); | 
| } | 
|  | 
| +bool BluetoothDevice::isValidDescriptor(const String& descriptorInstanceId) { | 
| +  return m_attributeInstanceMap->containsDescriptor(descriptorInstanceId); | 
| +} | 
| + | 
| void BluetoothDevice::dispose() { | 
| disconnectGATTIfConnected(); | 
| } | 
|  |