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

Source/core/html/parser/HTMLTreeBuilder.cpp

Index: Source/core/html/parser/HTMLTreeBuilder.cpp
diff --git a/Source/core/html/parser/HTMLTreeBuilder.cpp b/Source/core/html/parser/HTMLTreeBuilder.cpp
index a79d14de285309ccdc727ae894e169da10b32c47..2c2bf920db72442114442757b0bc0a83ed71a16c 100644
--- a/Source/core/html/parser/HTMLTreeBuilder.cpp
+++ b/Source/core/html/parser/HTMLTreeBuilder.cpp
@@ -867,7 +867,7 @@ void HTMLTreeBuilder::processStartTagForInBody(AtomicHTMLToken* token)
         m_tree.insertHTMLElement(token);
         return;
     }
-    if (token->name() == rpTag || token->name() == rtTag) {
+    if (token->name() == rbTag || token->name() == rtcTag) {
         if (m_tree.openElements()->inScope(rubyTag.localName())) {
             m_tree.generateImpliedEndTags();
             if (!m_tree.currentStackItem()->hasTagName(rubyTag))
@@ -876,6 +876,15 @@ void HTMLTreeBuilder::processStartTagForInBody(AtomicHTMLToken* token)
         m_tree.insertHTMLElement(token);
         return;
     }
+    if (token->name() == rtTag || token->name() == rpTag) {
+        if (m_tree.openElements()->inScope(rubyTag.localName())) {
+            m_tree.generateImpliedEndTagsWithExclusion(rtcTag.localName());
+            if (!m_tree.currentStackItem()->hasTagName(rubyTag) && !m_tree.currentStackItem()->hasTagName(rtcTag))
+                parseError(token);
+        }
+        m_tree.insertHTMLElement(token);
+        return;
+    }
     if (token->name() == MathMLNames::mathTag.localName()) {
         m_tree.reconstructTheActiveFormattingElements();
         adjustMathMLAttributes(token);