Oilpan: Prepare to support garbage-collected Node in WebNode hierarchy.

Source/web/WebSearchableFormData.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 217 matching lines @@
         }
     }
     return isElementFound;
 }
 } // namespace
 
 namespace blink {
 
 WebSearchableFormData::WebSearchableFormData(const WebFormElement& form, const WebInputElement& selectedInputElement)
 {
-    RefPtr<HTMLFormElement> formElement = form.operator PassRefPtr<HTMLFormElement>();
-    HTMLInputElement* inputElement = selectedInputElement.operator PassRefPtr<HTMLInputElement>().get();
+    RefPtrWillBeRawPtr<HTMLFormElement> formElement = static_cast<PassRefPtrWillBeRawPtr<HTMLFormElement> >(form);
+    HTMLInputElement* inputElement = static_cast<PassRefPtrWillBeRawPtr<HTMLInputElement> >(selectedInputElement).get();
 
     // Only consider forms that GET data.
     // Allow HTTPS only when an input element is provided.
     if (equalIgnoringCase(formElement->getAttribute(methodAttr), "post")
         || (!IsHTTPFormSubmit(formElement.get()) && !inputElement))
         return;
 
     Vector<char> encodedString;
     WTF::TextEncoding encoding;
 
@@ skipping 34 matching lines @@
 
     String action(formElement->action());
     KURL url(formElement->document().completeURL(action.isNull() ? "" : action));
     RefPtr<FormData> formData = FormData::create(encodedString);
     url.setQuery(formData->flattenToString());
     m_url = url;
     m_encoding = String(encoding.name());
 }
 
 } // namespace blink