Merge 94821 - [chromium] KURL::copy doesn't produce something usable on another thread.

Source/WebCore/platform/KURLGoogle.cpp

 /*
  * Copyright (C) 2004, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009, 2011 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.
@@ skipping 266 matching lines @@
 void KURLGooglePrivate::copyTo(KURLGooglePrivate* dest) const
 {
     dest->m_isValid = m_isValid;
     dest->m_protocolIsInHTTPFamily = m_protocolIsInHTTPFamily;
     dest->m_parsed = m_parsed;
 
     // Don't copy the 16-bit string since that will be regenerated as needed.
     dest->m_utf8 = CString(m_utf8.data(), m_utf8.length());
     dest->m_utf8IsASCII = m_utf8IsASCII;
     dest->m_stringIsValid = false;
+    dest->m_string = String(); // Clear the invalid string to avoid cross thread ref counting.
 }
 
 String KURLGooglePrivate::componentString(const url_parse::Component& comp) const
 {
     if (!m_isValid || comp.len <= 0) {
         // KURL returns a null string if the URL is itself a null string, and an
         // empty string for other nonexistent entities.
         if (utf8String().isNull())
             return String();
         return String("", 0);
@@ skipping 662 matching lines @@
     
     if (a.port() != b.port())
         return false;
 
     return true;
 }
 
 } // namespace WebCore
 
 #endif // USE(GOOGLEURL)