Do not call lower() on domains set from DOM after canonicalization

third_party/WebKit/Source/platform/weborigin/SecurityOrigin.cpp

 /*
  * Copyright (C) 2007 Apple 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
@@ skipping 185 matching lines @@
   ASSERT(origin->isUnique());
   return origin.release();
 }
 
 PassRefPtr<SecurityOrigin> SecurityOrigin::isolatedCopy() const {
   return adoptRef(new SecurityOrigin(this));
 }
 
 void SecurityOrigin::setDomainFromDOM(const String& newDomain) {
   m_domainWasSetInDOM = true;
-  m_domain = newDomain.lower();
+  m_domain = newDomain;
 }
 
 bool SecurityOrigin::isSecure(const KURL& url) {
   if (SchemeRegistry::shouldTreatURLSchemeAsSecure(url.protocol()))
     return true;
 
   // URLs that wrap inner URLs are secure if those inner URLs are secure.
   if (shouldUseInnerURL(url) && SchemeRegistry::shouldTreatURLSchemeAsSecure(
                                     extractInnerURL(url).protocol()))
     return true;
@@ skipping 401 matching lines @@
         utf8.data(), url::Component(0, utf8.length()), &canonOutput, &outHost);
   } else {
     *success = url::CanonicalizeHost(host.characters16(),
                                      url::Component(0, host.length()),
                                      &canonOutput, &outHost);
   }
   return String::fromUTF8(canonOutput.data(), canonOutput.length());
 }
 
 }  // namespace blink