[CSS Grid Layout] Adapting align-self, align-items and justify-self to the last CSS 3 spec.

Source/core/css/resolver/StyleAdjuster.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 236 matching lines @@
         if ((isSVGForeignObjectElement(*e) || isSVGTextElement(*e)) && style->isDisplayInlineType())
             style->setDisplay(BLOCK);
     }
 
     if (e && e->renderStyle() && e->renderStyle()->textAutosizingMultiplier() != 1) {
         // Preserve the text autosizing multiplier on style recalc.
         // (The autosizer will update it during layout if it needs to be changed.)
         style->setTextAutosizingMultiplier(e->renderStyle()->textAutosizingMultiplier());
         style->setUnique();
     }
+
+    adjustStyleForAlignment(style, *parentStyle);
+}
+
+void StyleAdjuster::adjustStyleForAlignment(RenderStyle* style, RenderStyle& parentStyle)
+{
+    if (style->justifyItems() == ItemPositionAuto)
+        style->resolveJustifyItemsAuto(parentStyle);
+
+    if (style->justifySelf() == ItemPositionAuto)
+        style->resolveJustifySelfAuto(parentStyle);
+
+    if (style->alignItems() == ItemPositionAuto)
+        style->resolveAlignItemsAuto(parentStyle);
+
+    if (style->alignSelf() == ItemPositionAuto)
+        style->resolveAlignSelfAuto(parentStyle);
 }
 
 void StyleAdjuster::adjustStyleForTagName(RenderStyle* style, RenderStyle* parentStyle, Element& element)
 {
     // <div> and <span> are the most common elements on the web, we skip all the work for them.
     if (isHTMLDivElement(element) || isHTMLSpanElement(element))
         return;
 
     if (isHTMLTableCellElement(element)) {
         // If we have a <td> that specifies a float property, in quirks mode we just drop the float property.
@@ skipping 131 matching lines @@
     if (style->writingMode() != TopToBottomWritingMode && (style->display() == BOX || style->display() == INLINE_BOX))
         style->setWritingMode(TopToBottomWritingMode);
 
     if (parentStyle->isDisplayFlexibleOrGridBox()) {
         style->setFloating(NoFloat);
         style->setDisplay(equivalentBlockDisplay(style->display(), style->isFloating(), !m_useQuirksModeStyles));
     }
 }
 
 }