Make static KURLs thread safe

third_party/WebKit/Source/core/dom/DOMURL.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2012 Motorola Mobility Inc.
  *
  * 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.
@@ skipping 39 matching lines @@
     exceptionState.throwTypeError("Invalid URL");
 }
 
 DOMURL::~DOMURL() {}
 
 DEFINE_TRACE(DOMURL) {
   visitor->trace(m_searchParams);
 }
 
 void DOMURL::setInput(const String& value) {
-  KURL url(blankURL(), value);
+  KURL url(KURL(ParsedURLString, kAboutBlankUrl), value);
   if (url.isValid()) {
     m_url = url;
     m_input = String();
   } else {
     m_url = KURL();
     m_input = value;
   }
   update();
 }
 
@@ skipping 36 matching lines @@
     return;
 
   AutoReset<bool> scope(&m_isInUpdate, true);
 #if DCHECK_IS_ON()
   DCHECK_EQ(m_searchParams->urlObject(), this);
 #endif
   m_searchParams->setInput(queryString);
 }
 
 }  // namespace blink