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

sky/engine/core/dom/Text.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 24 matching lines @@
 public:
     static const unsigned defaultLengthLimit = 1 << 16;
 
     static PassRefPtr<Text> create(Document&, const String&);
     static PassRefPtr<Text> createEditingText(Document&, const String&);
 
     RenderText* renderer() const;
 
     PassRefPtr<Text> splitText(unsigned offset, ExceptionState&);
 
-    void recalcTextStyle(StyleRecalcChange, Text* nextTextSibling);
+    void recalcTextStyle(StyleRecalcChange);
     bool textRendererIsNeeded(const RenderStyle&, const RenderObject& parent);
     RenderText* createTextRenderer(RenderStyle*);
     void updateTextRenderer(unsigned offsetOfReplacedData, unsigned lengthOfReplacedData, RecalcStyleBehavior = DoNotRecalcStyle);
 
     virtual void attach(const AttachContext& = AttachContext()) override final;
 
     virtual bool canContainRangeEndPoint() const override final { return true; }
     virtual NodeType nodeType() const override;
 
 protected:
@@ skipping 15 matching lines @@
 #ifndef NDEBUG
     virtual void formatForDebugger(char* buffer, unsigned length) const override;
 #endif
 };
 
 DEFINE_NODE_TYPE_CASTS(Text, isTextNode());
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_DOM_TEXT_H_