Replaced HTMLIdentifier with an atomized string factory function

Source/core/html/parser/AtomicHTMLToken.h

Index: Source/core/html/parser/AtomicHTMLToken.h
diff --git a/Source/core/html/parser/AtomicHTMLToken.h b/Source/core/html/parser/AtomicHTMLToken.h
index 4bc8aa47952d7867a93a24a008ec12f1033463a0..63e8c0c86dc3af3a795479c88d4e682624e8662b 100644
--- a/Source/core/html/parser/AtomicHTMLToken.h
+++ b/Source/core/html/parser/AtomicHTMLToken.h
@@ -150,10 +150,10 @@ public:
             ASSERT_NOT_REACHED();
             break;
         case HTMLToken::DOCTYPE:
-            m_name = token.data().asString();
+            m_name = token.data();
             m_doctypeData = adoptPtr(new DoctypeData());
             m_doctypeData->m_hasPublicIdentifier = true;
-            append(m_doctypeData->m_publicIdentifier, token.publicIdentifier().asString());
+            append(m_doctypeData->m_publicIdentifier, token.publicIdentifier());
             m_doctypeData->m_hasSystemIdentifier = true;
             append(m_doctypeData->m_systemIdentifier, token.systemIdentifier());
             m_doctypeData->m_forceQuirks = token.doctypeForcesQuirks();
@@ -163,7 +163,7 @@ public:
         case HTMLToken::StartTag:
             m_attributes.reserveInitialCapacity(token.attributes().size());
             for (Vector<CompactHTMLToken::Attribute>::const_iterator it = token.attributes().begin(); it != token.attributes().end(); ++it) {
-                QualifiedName name(nullAtom, it->name.asString(), nullAtom);
+                QualifiedName name(nullAtom, it->name, nullAtom);
                 // FIXME: This is N^2 for the number of attributes.
                 if (!findAttributeInVector(m_attributes, name))
                     m_attributes.append(Attribute(name, it->value));
@@ -171,11 +171,11 @@ public:
             // Fall through!
         case HTMLToken::EndTag:
             m_selfClosing = token.selfClosing();
-            m_name = token.data().asString();
+            m_name = token.data();
             break;
         case HTMLToken::Character:
         case HTMLToken::Comment:
-            m_data = token.data().asString();
+            m_data = token.data();
             break;
         }
     }