Enumerate the return value of dispatchEvent so it is clear.

third_party/WebKit/Source/bindings/core/v8/RejectedPromises.cpp

Index: third_party/WebKit/Source/bindings/core/v8/RejectedPromises.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.cpp b/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.cpp
index a9ea53c3a7f0a88aff4ae508ed71b71e3dd5a9b1..801adebc5aa8ba0c9f05023eebf9d98f453bb8c9 100644
--- a/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/RejectedPromises.cpp
@@ -70,8 +70,8 @@ public:
             init.setReason(ScriptValue(m_scriptState, reason));
             init.setCancelable(true);
             RefPtrWillBeRawPtr<PromiseRejectionEvent> event = PromiseRejectionEvent::create(m_scriptState, EventTypeNames::unhandledrejection, init);
-            // Log to console if event was not preventDefault()'ed.
-            m_shouldLogToConsole = target->dispatchEvent(event);
+            // Log to console if event was not canceled.
+            m_shouldLogToConsole = target->dispatchEvent(event) == DispatchEventResult::NotCanceled;
         }
 
         if (m_shouldLogToConsole) {