Add UseCounter for WebBluetooth

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

 // Copyright 2015 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/Bluetooth.h"
 
 #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/dom/ExceptionCode.h"
+#include "core/frame/UseCounter.h"
 #include "modules/bluetooth/BluetoothDevice.h"
 #include "modules/bluetooth/BluetoothError.h"
 #include "modules/bluetooth/BluetoothSupplement.h"
 #include "modules/bluetooth/BluetoothUUID.h"
 #include "modules/bluetooth/RequestDeviceOptions.h"
 #include "platform/UserGestureIndicator.h"
 #include "public/platform/modules/bluetooth/WebBluetooth.h"
 #include "public/platform/modules/bluetooth/WebRequestDeviceOptions.h"
 
 namespace blink {
@@ skipping 147 matching lines @@
   convertRequestDeviceOptions(options, webOptions, exceptionState);
   if (exceptionState.hadException())
     return exceptionState.reject(scriptState);
 
   // Subsequent steps are handled in the browser process.
   ScriptPromiseResolver* resolver = ScriptPromiseResolver::create(scriptState);
   ScriptPromise promise = resolver->promise();
   webbluetooth->requestDevice(
       webOptions,
       new CallbackPromiseAdapter<BluetoothDevice, BluetoothError>(resolver));
+  UseCounter::count(context, UseCounter::WebBluetoothRequestDevice);

[scheib, 2016/10/28 23:20:35]

Instead of using this here, use IDL MeasureAs extended attribute:

https://chromium.googlesource.com/chromium/src/+/master/third_party/WebKit/So...

[juncai, 2016/10/28 23:49:45]

Done.

   return promise;
 }
 
 }  // namespace blink