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

sky/engine/core/html/parser/HTMLConstructionSite.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 45 matching lines @@
     RefPtr<Node> child;
     bool selfClosing;
 };
 
 } // namespace blink
 
 WTF_ALLOW_MOVE_INIT_AND_COMPARE_WITH_MEM_FUNCTIONS(blink::HTMLConstructionSiteTask);
 
 namespace blink {
 
-// Note: These are intentionally ordered so that when we concatonate
-// strings and whitespaces the resulting whitespace is ws = min(ws1, ws2).
-enum WhitespaceMode {
-    WhitespaceUnknown,
-    NotAllWhitespace,
-    AllWhitespace,
-};
-
 class AtomicHTMLToken;
 class Document;
 class Element;
 
 class HTMLConstructionSite final {
     WTF_MAKE_NONCOPYABLE(HTMLConstructionSite);
     DISALLOW_ALLOCATION();
 public:
     explicit HTMLConstructionSite(Document*);
     explicit HTMLConstructionSite(DocumentFragment*);
@@ skipping 22 matching lines @@
     {
         return !m_pendingText.isEmpty() || !m_taskQueue.isEmpty();
     }
 
     void processEndOfFile();
     void finishedParsing();
 
     void insertHTMLElement(AtomicHTMLToken*);
     void insertSelfClosingHTMLElement(AtomicHTMLToken*);
     void insertScriptElement(AtomicHTMLToken*);
-    void insertTextNode(const String&, WhitespaceMode = WhitespaceUnknown);
+    void insertTextNode(const String&);
 
     bool isEmpty() const { return !m_openElements.stackDepth(); }
     Element* currentElement() const { return m_openElements.top(); }
     ContainerNode* currentNode() const { return m_openElements.topNode(); }
     Document& ownerDocumentForCurrentNode();
     HTMLElementStack* openElements() const { return &m_openElements; }
 
 private:
     // In the common case, this queue will have only one task because most
     // tokens produce only one DOM mutation.
@@ skipping 14 matching lines @@
     RawPtr<ContainerNode> m_attachmentRoot;
 
     mutable HTMLElementStack m_openElements;
 
     TaskQueue m_taskQueue;
 
     class PendingText {
         DISALLOW_ALLOCATION();
     public:
         PendingText()
-            : whitespaceMode(WhitespaceUnknown)
         {
         }
 
-        void append(PassRefPtr<ContainerNode> newParent, const String& newString, WhitespaceMode newWhitespaceMode)
+        void append(PassRefPtr<ContainerNode> newParent, const String& newString)
         {
             ASSERT(!parent || parent == newParent);
             parent = newParent;
             stringBuilder.append(newString);
-            whitespaceMode = std::min(whitespaceMode, newWhitespaceMode);
         }
 
         void swap(PendingText& other)
         {
-            std::swap(whitespaceMode, other.whitespaceMode);
             parent.swap(other.parent);
             stringBuilder.swap(other.stringBuilder);
         }
 
         void discard()
         {
             PendingText discardedText;
             swap(discardedText);
         }
 
         bool isEmpty()
         {
-            // When the stringbuilder is empty, the parent and whitespace should also be "empty".
+            // When the stringbuilder is empty, the parent should also be "empty".
             ASSERT(stringBuilder.isEmpty() == !parent);
             ASSERT(!stringBuilder.isEmpty() || !nextChild);
-            ASSERT(!stringBuilder.isEmpty() || (whitespaceMode == WhitespaceUnknown));
             return stringBuilder.isEmpty();
         }
 
         RefPtr<ContainerNode> parent;
         RefPtr<Node> nextChild;
         StringBuilder stringBuilder;
-        WhitespaceMode whitespaceMode;
     };
 
     PendingText m_pendingText;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_HTML_PARSER_HTMLCONSTRUCTIONSITE_H_