Web Animations CSS: Handle border-spacing property

Source/core/css/resolver/AnimatedStyleBuilder.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 195 matching lines @@
     case CSSPropertyTextDecorationColor:
         style->setTextDecorationColor(toAnimatableColor(value)->color());
         style->setVisitedLinkTextDecorationColor(toAnimatableColor(value)->visitedLinkColor());
         return;
     case CSSPropertyTextIndent:
         style->setTextIndent(animatableValueToLength(value, state));
         return;
     case CSSPropertyTop:
         style->setTop(animatableValueToLength(value, state));
         return;
+    case CSSPropertyWebkitBorderHorizontalSpacing:
+        style->setHorizontalBorderSpacing(animatableValueRoundClampTo<unsigned short>(value));
+        return;
+    case CSSPropertyWebkitBorderVerticalSpacing:
+        style->setVerticalBorderSpacing(animatableValueRoundClampTo<unsigned short>(value));
+        return;
     case CSSPropertyWebkitColumnRuleColor:
         style->setColumnRuleColor(toAnimatableColor(value)->color());
         style->setVisitedLinkColumnRuleColor(toAnimatableColor(value)->visitedLinkColor());
         return;
     case CSSPropertyWebkitColumnRuleWidth:
         style->setColumnRuleWidth(animatableValueRoundClampTo<unsigned short>(value));
         return;
     case CSSPropertyWebkitMaskBoxImageSource:
         style->setMaskBoxImageSource(toAnimatableImage(value)->toStyleImage());
         return;
@@ skipping 39 matching lines @@
     case CSSPropertyZIndex:
         style->setZIndex(animatableValueRoundClampTo<int>(value));
         return;
     default:
         RELEASE_ASSERT_WITH_MESSAGE(!CSSAnimations::isAnimatableProperty(property), "Web Animations not yet implemented: Unable to apply AnimatableValue to RenderStyle: %s", getPropertyNameString(property).utf8().data());
         ASSERT_NOT_REACHED();
     }
 }
 
 } // namespace WebCore