HTMLConstructionSite::m_{head,form} Add reference to the HTML spec

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 233 matching lines @@
     void executeTask(HTMLConstructionSiteTask&);
     void queueTask(const HTMLConstructionSiteTask&);
 
     Member<Document> m_document;
 
     // This is the root ContainerNode to which the parser attaches all newly
     // constructed nodes. It points to a DocumentFragment when parsing fragments
     // and a Document in all other cases.
     Member<ContainerNode> m_attachmentRoot;
 
+    // https://html.spec.whatwg.org/multipage/syntax.html#head-element-pointer
     Member<HTMLStackItem> m_head;
+    // https://html.spec.whatwg.org/multipage/syntax.html#form-element-pointer
     Member<HTMLFormElement> m_form;
     mutable HTMLElementStack m_openElements;
     mutable HTMLFormattingElementList m_activeFormattingElements;
 
     TaskQueue m_taskQueue;
 
     class PendingText final {
         DISALLOW_NEW();
     public:
         PendingText()
@@ skipping 52 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