[css-align] Implement place-content alignment shorthand

third_party/WebKit/Source/core/css/ComputedStyleCSSValueMapping.cpp

 /*
  * Copyright (C) 2004 Zack Rusin <zack@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc.
  * All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2011 Sencha, Inc. All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2296 matching lines @@
         return list;
       }
       return value;
     }
     case CSSPropertyDirection:
       return CSSIdentifierValue::create(style.direction());
     case CSSPropertyDisplay:
       return CSSIdentifierValue::create(style.display());
     case CSSPropertyEmptyCells:
       return CSSIdentifierValue::create(style.emptyCells());
+    case CSSPropertyPlaceContent: {
+      // TODO (jfernandez): The spec states that we should return the specified
+      // value.
+      return valuesForShorthandProperty(placeContentShorthand(), style,
+                                        layoutObject, styledNode,
+                                        allowVisitedStyle);
+    }
     case CSSPropertyAlignContent:
       return valueForContentPositionAndDistributionWithOverflowAlignment(
           style.alignContent(), CSSValueStretch);
     case CSSPropertyAlignItems:
       return valueForItemPositionWithOverflowAlignment(style.alignItems());
     case CSSPropertyAlignSelf:
       return valueForItemPositionWithOverflowAlignment(style.alignSelf());
     case CSSPropertyFlex:
       return valuesForShorthandProperty(flexShorthand(), style, layoutObject,
                                         styledNode, allowVisitedStyle);
@@ skipping 1338 matching lines @@
     case CSSPropertyAll:
       return nullptr;
     default:
       break;
   }
   ASSERT_NOT_REACHED();
   return nullptr;
 }
 
 }  // namespace blink