Catch up ruby and its tag omission rule changes in HTML5 CR Feb 2014

Source/core/html/parser/HTMLConstructionSite.cpp

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  * Copyright (C) 2011 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 55 matching lines @@
 }
 
 static bool hasImpliedEndTag(const HTMLStackItem* item)
 {
     return item->hasTagName(ddTag)
         || item->hasTagName(dtTag)
         || item->hasTagName(liTag)
         || item->hasTagName(optionTag)
         || item->hasTagName(optgroupTag)
         || item->hasTagName(pTag)
+        || item->hasTagName(rbTag)
         || item->hasTagName(rpTag)
-        || item->hasTagName(rtTag);
+        || item->hasTagName(rtTag)
+        || item->hasTagName(rtcTag);
 }
 
 static bool shouldUseLengthLimit(const ContainerNode& node)
 {
     return !isHTMLScriptElement(node)
         && !isHTMLStyleElement(node)
         && !isSVGScriptElement(node);
 }
 
 static unsigned textLengthLimitForContainer(const ContainerNode& node)
@@ skipping 781 matching lines @@
 }
 
 void HTMLConstructionSite::PendingText::trace(Visitor* visitor)
 {
     visitor->trace(parent);
     visitor->trace(nextChild);
 }
 
 
 }