[Match Spec] Form element pointer should not be updated w/in <template>

third_party/WebKit/Source/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 95 matching lines @@
 class HTMLFormElement;
 
 class HTMLConstructionSite final {
     WTF_MAKE_NONCOPYABLE(HTMLConstructionSite);
     DISALLOW_NEW();
 public:
     HTMLConstructionSite(Document&, ParserContentPolicy);
     ~HTMLConstructionSite();
     DECLARE_TRACE();
 
-    void initFragmentParsing(DocumentFragment*);
+    void initFragmentParsing(DocumentFragment*, Element* contextElement);
 
     void detach();
 
     // executeQueuedTasks empties the queue but does not flush pending text.
     // NOTE: Possible reentrancy via JavaScript execution.
     void executeQueuedTasks();
 
     // flushPendingText turns pending text into queued Text insertions, but does not execute them.
     void flushPendingText(FlushMode);
 
@@ skipping 62 matching lines @@
     HTMLStackItem* currentStackItem() const { return m_openElements.topStackItem(); }
     HTMLStackItem* oneBelowTop() const { return m_openElements.oneBelowTop(); }
     Document& ownerDocumentForCurrentNode();
     HTMLElementStack* openElements() const { return &m_openElements; }
     HTMLFormattingElementList* activeFormattingElements() const { return &m_activeFormattingElements; }
     bool currentIsRootNode() { return m_openElements.topNode() == m_openElements.rootNode(); }
 
     Element* head() const { return m_head->element(); }
     HTMLStackItem* headStackItem() const { return m_head.get(); }
 
-    void setForm(HTMLFormElement*);
-    HTMLFormElement* form() const { return m_form.get(); }
+    bool isFormElementPointerNonNull() const { return m_form; }
     HTMLFormElement* takeForm();
 
     ParserContentPolicy getParserContentPolicy() { return m_parserContentPolicy; }
 
     class RedirectToFosterParentGuard {
         STACK_ALLOCATED();
         WTF_MAKE_NONCOPYABLE(RedirectToFosterParentGuard);
     public:
         RedirectToFosterParentGuard(HTMLConstructionSite& tree)
             : m_tree(tree)
@@ skipping 106 matching lines @@
     // "whenever a node would be inserted into the current node, it must instead
     // be foster parented."  This flag tracks whether we're in that state.
     bool m_redirectAttachToFosterParent;
 
     bool m_inQuirksMode;
 };
 
 } // namespace blink
 
 #endif