Usecounter added for counting usage of addEventListener for PointerEvents.

third_party/WebKit/Source/core/events/EventUtil.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 "core/events/EventUtil.h"
+
+#include "core/EventTypeNames.h"
+
+namespace blink {
+
+namespace eventUtil {

[bokan, 2016/05/11 21:19:59]

Can we make it EventUtil (with capitalized first letter)? Did the presubmit
complain about the name? Looking in the code style guidelines, nothing in
Blink/Chromium but Google seems to say namespaces should be all lower case. On
the other hand there's plenty of counter-examples in Blink and the call-site
looks weird like this.

If it's presubmit that's stopping you, just remove the eventUtil namespace and
keep in the blink namespace.

[sahel, 2016/05/11 21:34:43]

Done.

+
+bool isPointerEventType(const AtomicString& eventType)
+{
+return eventType == EventTypeNames::gotpointercapture
+    || eventType == EventTypeNames::lostpointercapture
+    || eventType == EventTypeNames::pointercancel
+    || eventType == EventTypeNames::pointerdown
+    || eventType == EventTypeNames::pointerenter
+    || eventType == EventTypeNames::pointerleave
+    || eventType == EventTypeNames::pointermove
+    || eventType == EventTypeNames::pointerout
+    || eventType == EventTypeNames::pointerover
+    || eventType == EventTypeNames::pointerup;
+}
+
+} // namespace eventUtil
+
+} // namespace blink
+
+