Enumerate the return value of dispatchEvent so it is clear.

third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.cpp

Index: third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.cpp
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.cpp b/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.cpp
index 0aa9545bda7e41c463acd7405c6b59d37763e3da..d34f8c8154a931badba87514e89fcd03b927236e 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.cpp
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBOpenDBRequest.cpp
@@ -163,7 +163,7 @@ bool IDBOpenDBRequest::shouldEnqueueEvent() const
     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.
@@ -171,7 +171,7 @@ bool IDBOpenDBRequest::dispatchEventInternal(PassRefPtrWillBeRawPtr<Event> event
         dequeueEvent(event.get());
         setResult(nullptr);
         onError(DOMException::create(AbortError, "The connection was closed."));
-        return false;
+        return WebInputEventResult::HandledSuppressed;
     }
 
     return IDBRequest::dispatchEventInternal(event);