Oilpan: have DOMException be on the heap by default.

Source/bindings/core/v8/V8ThrowException.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 55 matching lines @@
 
     v8::Handle<v8::Object> sanitizedCreationContext = creationContext;
 
     // FIXME: Is the current context always the right choice?
     Frame* frame = toFrameIfNotDetached(creationContext->CreationContext());
     if (!frame || !BindingSecurity::shouldAllowAccessToFrame(isolate, frame, DoNotReportSecurityError))
         sanitizedCreationContext = isolate->GetCurrentContext()->Global();
 
     v8::TryCatch tryCatch;
 
-    RefPtrWillBeRawPtr<DOMException> domException = DOMException::create(ec, sanitizedMessage, unsanitizedMessage);
-    v8::Local<v8::Value> exception = toV8(domException.get(), sanitizedCreationContext, isolate);
+    DOMException* domException = DOMException::create(ec, sanitizedMessage, unsanitizedMessage);
+    v8::Local<v8::Value> exception = toV8(domException, sanitizedCreationContext, isolate);
 
     if (tryCatch.HasCaught()) {
         ASSERT(exception.IsEmpty());
         return tryCatch.Exception();
     }
     ASSERT(!exception.IsEmpty());
 
     // Attach an Error object to the DOMException. This is then lazily used to get the stack value.
     v8::Local<v8::Value> error = v8::Exception::Error(v8String(isolate, domException->message()));
     ASSERT(!error.IsEmpty());
@@ skipping 71 matching lines @@
 }
 
 v8::Handle<v8::Value> V8ThrowException::throwException(v8::Handle<v8::Value> exception, v8::Isolate* isolate)
 {
     if (!v8::V8::IsExecutionTerminating())
         isolate->ThrowException(exception);
     return v8::Undefined(isolate);
 }
 
 } // namespace blink