Add the <t> element and ignore whitespace outside it.

sky/engine/core/html/parser/HTMLElementStack.h

 /*
  * 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 53 matching lines @@
         PassOwnPtr<ElementRecord> releaseNext() { return m_next.release(); }
         void setNext(PassOwnPtr<ElementRecord> next) { m_next = next; }
 
     private:
         RefPtr<ContainerNode> m_node;
         OwnPtr<ElementRecord> m_next;
     };
 
     unsigned stackDepth() const { return m_stackDepth; }
 
+    bool preserveWhiteSpace() const { return m_preserveWhiteSpaceCount; }
+
     // Inlining this function is a (small) performance win on the parsing
     // benchmark.
     Element* top() const
     {
         ASSERT(m_top->element());
         return m_top->element();
     }
 
     ContainerNode* topNode() const
     {
@@ skipping 16 matching lines @@
 
 private:
     void popUntil(Element*);
     void pushCommon(PassRefPtr<ContainerNode>);
     void popCommon();
 
     OwnPtr<ElementRecord> m_top;
 
     ContainerNode* m_rootNode;
     unsigned m_stackDepth;
+    unsigned m_preserveWhiteSpaceCount;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_HTML_PARSER_HTMLELEMENTSTACK_H_