Use C++11 range-based loop in core/events

Source/core/events/DOMWindowEventQueue.cpp

Index: Source/core/events/DOMWindowEventQueue.cpp
diff --git a/Source/core/events/DOMWindowEventQueue.cpp b/Source/core/events/DOMWindowEventQueue.cpp
index b4705379ac5fbe5fe410add3f0ef89cb9d80bc50..5ecb46590e8c95f3f63b608a71b212d9173d903c 100644
--- a/Source/core/events/DOMWindowEventQueue.cpp
+++ b/Source/core/events/DOMWindowEventQueue.cpp
@@ -108,9 +108,8 @@ void DOMWindowEventQueue::close()
     m_isClosed = true;
     m_pendingEventTimer->stop();
     if (InspectorInstrumentation::hasFrontends()) {
-        WillBeHeapListHashSet<RefPtrWillBeMember<Event>, 16>::iterator it = m_queuedEvents.begin();
-        for (; it != m_queuedEvents.end(); ++it) {
-            RefPtrWillBeRawPtr<Event> event = *it;
+        for (const auto& queuedEvent : m_queuedEvents) {
+            RefPtrWillBeRawPtr<Event> event = queuedEvent;
             if (event)
                 InspectorInstrumentation::didRemoveEvent(event->target(), event.get());
         }