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 32d5af0c77f010bfbad3bf3336339c1b94e3aa1d..c057636b6065ac865d13b1d2dd7cf4ba82de6dff 100644
--- a/Source/core/html/parser/HTMLScriptRunner.cpp
+++ b/Source/core/html/parser/HTMLScriptRunner.cpp
@@ -79,7 +79,7 @@ static KURL documentURLForScriptExecution(Document* document)
     return document->frame()->document()->url();
 }
 
-inline PassRefPtr<Event> createScriptLoadEvent()
+inline PassRefPtrWillBeRawPtr<Event> createScriptLoadEvent()
 {
     return Event::create(EventTypeNames::load);
 }