Sibling invalidation sets

Source/core/inspector/InspectorTraceEvents.h

Index: Source/core/inspector/InspectorTraceEvents.h
diff --git a/Source/core/inspector/InspectorTraceEvents.h b/Source/core/inspector/InspectorTraceEvents.h
index 55c13cdfb4a3a5a66853274f67e669cac92af326..e3d92c9b269103437e9482b07702800b02aa56df 100644
--- a/Source/core/inspector/InspectorTraceEvents.h
+++ b/Source/core/inspector/InspectorTraceEvents.h
@@ -44,6 +44,8 @@ class TracedValue;
 class WorkerThread;
 class XMLHttpRequest;
 
+using InvalidationSetVector = WillBeHeapVector<RefPtrWillBeMember<InvalidationSet>, 8>;
+
 class InspectorLayoutEvent {
     STATIC_ONLY(InspectorLayoutEvent);
 public:
@@ -97,7 +99,7 @@ public:
 
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> data(Element&, const char* reason);
     static PassRefPtr<TraceEvent::ConvertableToTraceFormat> selectorPart(Element&, const char* reason, const InvalidationSet&, const String&);
-    static PassRefPtr<TraceEvent::ConvertableToTraceFormat> invalidationList(Element&, const WillBeHeapVector<RefPtrWillBeMember<InvalidationSet>>&);
+    static PassRefPtr<TraceEvent::ConvertableToTraceFormat> invalidationList(Element&, const InvalidationSetVector&);
 
 private:
     static PassRefPtr<TracedValue> fillCommonPart(Element&, const char* reason);