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

Source/core/events/ScopedEventQueue.h

 /*
  * Copyright (C) 2010 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 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScopedEventQueue_h
 #define ScopedEventQueue_h
 
+#include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/PassRefPtr.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class EventDispatchMediator;
 
-class ScopedEventQueue {
+class CORE_EXPORT ScopedEventQueue {
     WTF_MAKE_NONCOPYABLE(ScopedEventQueue); WTF_MAKE_FAST_ALLOCATED(ScopedEventQueue);
 public:
     ~ScopedEventQueue();
 
     void enqueueEventDispatchMediator(PassRefPtrWillBeRawPtr<EventDispatchMediator>);
     void dispatchAllEvents();
     static ScopedEventQueue* instance();
 
     void incrementScopingLevel();
     void decrementScopingLevel();
@@ skipping 13 matching lines @@
     WTF_MAKE_NONCOPYABLE(EventQueueScope);
     STACK_ALLOCATED();
 public:
     EventQueueScope() { ScopedEventQueue::instance()->incrementScopingLevel(); }
     ~EventQueueScope() { ScopedEventQueue::instance()->decrementScopingLevel(); }
 };
 
 }
 
 #endif // ScopedEventQueue_h