Enumerate the return value of dispatchEvent so it is clear.

third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 145 matching lines @@
 bool IDBOpenDBRequest::shouldEnqueueEvent() const
 {
     if (m_contextStopped || !executionContext())
         return false;
     ASSERT(m_readyState == PENDING || m_readyState == DONE);
     if (m_requestAborted)
         return false;
     return true;
 }
 
-bool IDBOpenDBRequest::dispatchEventInternal(PassRefPtrWillBeRawPtr<Event> event)
+WebInputEventResult IDBOpenDBRequest::dispatchEventInternal(PassRefPtrWillBeRawPtr<Event> event)
 {
     // If the connection closed between onUpgradeNeeded and the delivery of the "success" event,
     // an "error" event should be fired instead.
     if (event->type() == EventTypeNames::success && resultAsAny()->type() == IDBAny::IDBDatabaseType && resultAsAny()->idbDatabase()->isClosePending()) {
         dequeueEvent(event.get());
         setResult(nullptr);
         onError(DOMException::create(AbortError, "The connection was closed."));
-        return false;
+        return WebInputEventResult::HandledSuppressed;
     }
 
     return IDBRequest::dispatchEventInternal(event);
 }
 
 } // namespace blink