[css-align] New CSS Value 'normal' for Self Alignment

third_party/WebKit/Source/core/dom/Document.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
@@ skipping 974 matching lines @@
     void addToTopLayer(Element*, const Element* before = nullptr);
     void removeFromTopLayer(Element*);
     const WillBeHeapVector<RefPtrWillBeMember<Element>>& topLayerElements() const { return m_topLayerElements; }
     HTMLDialogElement* activeModalDialog() const;
 
     // A non-null m_templateDocumentHost implies that |this| was created by ensureTemplateDocument().
     bool isTemplateDocument() const { return !!m_templateDocumentHost; }
     Document& ensureTemplateDocument();
     Document* templateDocumentHost() { return m_templateDocumentHost; }
 
+    const ComputedStyle* virtualEnsureComputedStyle(PseudoId pseudoElementSpecifier = NOPSEUDO) override;

[Timothy Loh, 2016/02/25 00:23:17]

Why was this change needed?

[jfernandez, 2016/02/25 01:52:37]

To ensure every Node accessible from ComputeStyleValueMapping has a valid
ComputedStyle pointer. Since for some properties, like 'justify-items',
'justify-self' and 'align-self', the auto value must be resolved with the
parent's computed value, we have to assume the root node has the RenderView's
ComputedStyle instance.  

+
     // TODO(thestig): Rename these and related functions, since we can call them
     // for labels and input fields outside of forms as well.
     void didAssociateFormControl(Element*);
     void removeFormAssociation(Element*);
 
     void addConsoleMessage(PassRefPtrWillBeRawPtr<ConsoleMessage>) final;
 
     LocalDOMWindow* executingWindow() final;
     LocalFrame* executingFrame();
 
@@ skipping 447 matching lines @@
 DEFINE_TYPE_CASTS(TreeScope, Document, document, true, true);
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLiveDocumentInstances();
 #endif
 
 #endif // Document_h