Don't call lower() on KURL protocol/host

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

 /*
  * Copyright (C) 2004, 2007, 2008, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Research In Motion Limited. 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 706 matching lines @@
 void KURL::init(const KURL& base,
                 const String& relative,
                 const WTF::TextEncoding* queryEncoding) {
   if (!relative.isNull() && relative.is8Bit()) {
     StringUTF8Adaptor relativeUTF8(relative);
     init(base, relativeUTF8.data(), relativeUTF8.length(), queryEncoding);
   } else
     init(base, relative.characters16(), relative.length(), queryEncoding);
   initProtocolIsInHTTPFamily();
   initInnerURL();
+  DCHECK_EQ(protocol(), protocol().lower());
 }
 
 template <typename CHAR>
 void KURL::init(const KURL& base,
                 const CHAR* relative,
                 int relativeLength,
                 const WTF::TextEncoding* queryEncoding) {
   // As a performance optimization, we do not use the charset converter
   // if encoding is UTF-8 or other Unicode encodings. Note that this is
   // per HTML5 2.5.3 (resolving URL). The URL canonicalizer will be more
@@ skipping 131 matching lines @@
   m_parsed = newParsed;
   m_string = AtomicString::fromUTF8(output.data(), output.length());
 }
 
 bool KURL::isSafeToSendToAnotherThread() const {
   return m_string.isSafeToSendToAnotherThread() &&
          (!m_innerURL || m_innerURL->isSafeToSendToAnotherThread());
 }
 
 }  // namespace blink