New SELECT popup: Delay change event dispatching when an option is selected.

Source/web/PopupMenuImpl.cpp

 // Copyright (c) 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 "config.h"
 #include "web/PopupMenuImpl.h"
 
 #include "core/HTMLNames.h"
 #include "core/css/CSSFontSelector.h"
 #include "core/dom/ElementTraversal.h"
 #include "core/dom/ExecutionContextTask.h"
 #include "core/dom/NodeComputedStyle.h"
 #include "core/dom/StyleEngine.h"
+#include "core/events/ScopedEventQueue.h"
 #include "core/frame/FrameView.h"
 #include "core/html/HTMLHRElement.h"
 #include "core/html/HTMLOptGroupElement.h"
 #include "core/html/HTMLOptionElement.h"
 #include "core/html/HTMLSelectElement.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/layout/LayoutTheme.h"
 #include "core/page/PagePopup.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/text/PlatformLocale.h"
@@ skipping 373 matching lines @@
 void PopupMenuImpl::selectFontsFromOwnerDocument(Document& document)
 {
     Document& ownerDocument = ownerElement().document();
     document.styleEngine().setFontSelector(PopupMenuCSSFontSelector::create(&document, ownerDocument.styleEngine().fontSelector()));
 }
 
 void PopupMenuImpl::setValueAndClosePopup(int numValue, const String& stringValue)
 {
     ASSERT(m_popup);
     ASSERT(m_ownerElement);
+    EventQueueScope scope;
     RefPtrWillBeRawPtr<PopupMenuImpl> protector(this);
     bool success;
     int listIndex = stringValue.toInt(&success);
     ASSERT(success);
     m_ownerElement->valueChanged(listIndex);
     if (m_popup)
         m_chromeClient->closePagePopup(m_popup);
     // We dispatch events on the owner element to match the legacy behavior.
     // Other browsers dispatch click events before and after showing the popup.
     if (m_ownerElement) {
@@ skipping 99 matching lines @@
 
 void PopupMenuImpl::disconnectClient()
 {
     m_ownerElement = nullptr;
     // Cannot be done during finalization, so instead done when the
     // layout object is destroyed and disconnected.
     dispose();
 }
 
 } // namespace blink