CSS: Translate support for none.

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 3520 matching lines @@
       return valueForScrollSnapPoints(style.scrollSnapPointsX(), style);
     case CSSPropertyScrollSnapPointsY:
       return valueForScrollSnapPoints(style.scrollSnapPointsY(), style);
     case CSSPropertyScrollSnapCoordinate:
       return valueForScrollSnapCoordinate(style.scrollSnapCoordinate(), style);
     case CSSPropertyScrollSnapDestination:
       return valueForScrollSnapDestination(style.scrollSnapDestination(),
                                            style);
     case CSSPropertyTranslate: {
       if (!style.translate())
-        return CSSPrimitiveValue::create(0,
-                                         CSSPrimitiveValue::UnitType::Pixels);
+        return CSSIdentifierValue::create(CSSValueNone);
 
       CSSValueList* list = CSSValueList::createSpaceSeparated();
       if (layoutObject && layoutObject->isBox()) {
         LayoutRect box = toLayoutBox(layoutObject)->borderBoxRect();
         list->append(*zoomAdjustedPixelValue(
             floatValueForLength(style.translate()->x(), box.width().toFloat()),
             style));
 
         if (!style.translate()->y().isZero() || style.translate()->z() != 0)
           list->append(*zoomAdjustedPixelValue(
@@ skipping 89 matching lines @@
     case CSSPropertyAll:
       return nullptr;
     default:
       break;
   }
   ASSERT_NOT_REACHED();
   return nullptr;
 }
 
 }  // namespace blink