Oilpan: Replace most of RefPtrs for Event objects with oilpan's transition types

Source/core/html/parser/HTMLScriptRunner.cpp

Index: Source/core/html/parser/HTMLScriptRunner.cpp
diff --git a/Source/core/html/parser/HTMLScriptRunner.cpp b/Source/core/html/parser/HTMLScriptRunner.cpp
index a9bc5dc045e56b2c2f0102304d7dd62b18de1da6..b56cc1394d4e1f4db6ead28716dbdae90102d25a 100644
--- a/Source/core/html/parser/HTMLScriptRunner.cpp
+++ b/Source/core/html/parser/HTMLScriptRunner.cpp
@@ -85,7 +85,7 @@ static KURL documentURLForScriptExecution(Document* document)
     return document->frame()->document()->url();
 }
 
-inline PassRefPtr<Event> createScriptLoadEvent()
+inline PassRefPtrWillBeRawPtr<Event> createScriptLoadEvent()
 {
     return Event::create(EventTypeNames::load);
 }