The length of scheme is at least five characters even when the scheme has 'web+' prefix

Source/modules/navigatorcontentutils/NavigatorContentUtils.cpp

 /*
  * Copyright (C) 2011, Google Inc. All rights reserved.
  * Copyright (C) 2012, Samsung Electronics. 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 88 matching lines @@
 static bool isProtocolWhitelisted(const String& scheme)
 {
     if (!protocolWhitelist)
         initProtocolHandlerWhitelist();
     return protocolWhitelist->contains(scheme);
 }
 
 static bool verifyProtocolHandlerScheme(const String& scheme, ExceptionState& es)
 {
     if (scheme.startsWith("web+")) {
-        if (isValidProtocol(scheme))
+        // The specification requires that the length of scheme is at least five characteres (including 'web+' prefix).
+        if (scheme.length() >= 5 && isValidProtocol(scheme))
             return true;
         es.throwDOMException(SecurityError);
         return false;
     }
 
     if (isProtocolWhitelisted(scheme))
         return true;
     es.throwDOMException(SecurityError);
     return false;
 }
@@ skipping 96 matching lines @@
 
 void provideNavigatorContentUtilsTo(Page* page, NavigatorContentUtilsClient* client)
 {
     RefCountedSupplement<Page, NavigatorContentUtils>::provideTo(page, NavigatorContentUtils::supplementName(), NavigatorContentUtils::create(client));
 }
 
 } // namespace WebCore
 
 #endif // ENABLE(NAVIGATOR_CONTENT_UTILS)