Oilpan: have DOMException be on the heap by default.

Source/core/dom/DOMException.cpp

Index: Source/core/dom/DOMException.cpp
diff --git a/Source/core/dom/DOMException.cpp b/Source/core/dom/DOMException.cpp
index b83bc848cec2c05b9ca6416fd73f2ba8314ec750..a669c049c184f89e9801b026f52eb520f7e8351a 100644
--- a/Source/core/dom/DOMException.cpp
+++ b/Source/core/dom/DOMException.cpp
@@ -98,14 +98,14 @@ DOMException::DOMException(unsigned short code, const String& name, const String
     m_unsanitizedMessage = unsanitizedMessage;
 }
 
-PassRefPtrWillBeRawPtr<DOMException> DOMException::create(ExceptionCode ec, const String& sanitizedMessage, const String& unsanitizedMessage)
+DOMException* DOMException::create(ExceptionCode ec, const String& sanitizedMessage, const String& unsanitizedMessage)
 {
     const CoreException* entry = getErrorEntry(ec);
     ASSERT(entry);
-    return adoptRefWillBeNoop(new DOMException(entry->code,
+    return new DOMException(entry->code,
         entry->name ? entry->name : "Error",
         sanitizedMessage.isNull() ? String(entry->message) : sanitizedMessage,
-        unsanitizedMessage));
+        unsanitizedMessage);
 }
 
 String DOMException::toString() const