XHR: Lowercase header names returned by getAllResponseHeaders().

third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequest.cpp

 /*
  *  Copyright (C) 2004, 2006, 2008 Apple Inc. All rights reserved.
  *  Copyright (C) 2005-2007 Alexey Proskuryakov <ap@webkit.org>
  *  Copyright (C) 2007, 2008 Julien Chaffraix <jchaffraix@webkit.org>
  *  Copyright (C) 2008, 2011 Google Inc. All rights reserved.
  *  Copyright (C) 2012 Intel Corporation
  *
  *  This library is free software; you can redistribute it and/or
  *  modify it under the terms of the GNU Lesser General Public
  *  License as published by the Free Software Foundation; either
@@ skipping 1384 matching lines @@
     // crbug.com/567527
     if (FetchUtils::IsForbiddenResponseHeaderName(it->key) &&
         !GetSecurityOrigin()->CanLoadLocalResources())
       continue;
 
     if (!same_origin_request_ &&
         !IsOnAccessControlResponseHeaderWhitelist(it->key) &&
         !access_control_expose_header_set.Contains(it->key))
       continue;
 
-    string_builder.Append(it->key);
+    string_builder.Append(it->key.LowerASCII());
     string_builder.Append(':');
     string_builder.Append(' ');
     string_builder.Append(it->value);
     string_builder.Append('\r');
     string_builder.Append('\n');
   }
 
   return string_builder.ToString();
 }
 
@@ skipping 475 matching lines @@
   visitor->TraceWrappers(response_document_);
   visitor->TraceWrappers(response_array_buffer_);
   XMLHttpRequestEventTarget::TraceWrappers(visitor);
 }
 
 std::ostream& operator<<(std::ostream& ostream, const XMLHttpRequest* xhr) {
   return ostream << "XMLHttpRequest " << static_cast<const void*>(xhr);
 }
 
 }  // namespace blink