bluetooth: Add usecounter for gattserverdisconnected

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

 // Copyright 2014 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/BluetoothDevice.h"
 
+#include <memory>
+#include <utility>
+
 #include "bindings/core/v8/CallbackPromiseAdapter.h"
 #include "bindings/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
 #include "core/events/Event.h"
+#include "core/frame/UseCounter.h"
 #include "modules/bluetooth/Bluetooth.h"
 #include "modules/bluetooth/BluetoothAttributeInstanceMap.h"
 #include "modules/bluetooth/BluetoothError.h"
 #include "modules/bluetooth/BluetoothRemoteGATTServer.h"
-#include <memory>
-#include <utility>
 
 namespace blink {
 
 BluetoothDevice::BluetoothDevice(ExecutionContext* context,
                                  mojom::blink::WebBluetoothDevicePtr device,
                                  Bluetooth* bluetooth)
     : ContextLifecycleObserver(context),
       attribute_instance_map_(new BluetoothAttributeInstanceMap(this)),
       device_(std::move(device)),
       gatt_(BluetoothRemoteGATTServer::Create(context, this)),
@@ skipping 61 matching lines @@
 }
 
 DEFINE_TRACE(BluetoothDevice) {
   visitor->Trace(attribute_instance_map_);
   visitor->Trace(gatt_);
   visitor->Trace(bluetooth_);
   EventTargetWithInlineData::Trace(visitor);
   ContextLifecycleObserver::Trace(visitor);
 }
 
+void BluetoothDevice::AddedEventListener(
+    const AtomicString& event_type,
+    RegisteredEventListener& registered_listener) {
+  EventTargetWithInlineData::AddedEventListener(event_type,
+                                                registered_listener);
+  if (event_type == EventTypeNames::gattserverdisconnected) {
+    UseCounter::Count(GetExecutionContext(),
+                      UseCounter::kGATTServerDisconnectedEvent);
+  }
+}
+
 }  // namespace blink