Fix flaky crash in WebPagePopupImpl::closePopup.

Source/core/html/shadow/PickerIndicatorElement.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 45 matching lines @@
 PassRefPtrWillBeRawPtr<PickerIndicatorElement> PickerIndicatorElement::create(Document& document, PickerIndicatorOwner& pickerIndicatorOwner)
 {
     RefPtrWillBeRawPtr<PickerIndicatorElement> element = adoptRefWillBeNoop(new PickerIndicatorElement(document, pickerIndicatorOwner));
     element->setShadowPseudoId(AtomicString("-webkit-calendar-picker-indicator", AtomicString::ConstructFromLiteral));
     element->setAttribute(idAttr, ShadowElementNames::pickerIndicator());
     return element.release();
 }
 
 PickerIndicatorElement::~PickerIndicatorElement()
 {
-    closePopup();
     ASSERT(!m_chooser);
 }
 
 LayoutObject* PickerIndicatorElement::createLayoutObject(const ComputedStyle&)
 {
     return new LayoutDetailsMarker(this);
 }
 
 void PickerIndicatorElement::defaultEventHandler(Event* event)
 {
@@ skipping 108 matching lines @@
 
 DEFINE_TRACE(PickerIndicatorElement)
 {
     visitor->trace(m_pickerIndicatorOwner);
     HTMLDivElement::trace(visitor);
 }
 
 }
 
 #endif