Unprefix -webkit-filter and add a pixel test for it.

sky/engine/core/css/resolver/StyleBuilderCustom.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * 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.
@@ skipping 615 matching lines @@
     if (value->isPrimitiveValue()) {
         CSSPrimitiveValue* primitiveValue = toCSSPrimitiveValue(value);
         if (primitiveValue->getValueID() == CSSValueNone) {
             state.style()->setClipPath(nullptr);
         } else if (primitiveValue->isShape()) {
             state.style()->setClipPath(ShapeClipPathOperation::create(basicShapeForValue(state, primitiveValue->getShapeValue())));
         }
     }
 }
 
-void StyleBuilderFunctions::applyValueCSSPropertyWebkitFilter(StyleResolverState& state, CSSValue* value)
+void StyleBuilderFunctions::applyValueCSSPropertyFilter(StyleResolverState& state, CSSValue* value)
 {
     FilterOperations operations;
     if (FilterOperationResolver::createFilterOperations(value, state.cssToLengthConversionData(), operations, state))
         state.style()->setFilter(operations);
 }
 
 // FIXME: We should use the same system for this as the rest of the pseudo-shorthands (e.g. background-position)
 void StyleBuilderFunctions::applyInitialCSSPropertyWebkitPerspectiveOrigin(StyleResolverState& state)
 {
     applyInitialCSSPropertyWebkitPerspectiveOriginX(state);
@@ skipping 185 matching lines @@
         state.style()->setPerspective(perspectiveValue);
 }
 
 void StyleBuilderFunctions::applyValueCSSPropertyWebkitTextOrientation(StyleResolverState& state, CSSValue* value)
 {
     if (value->isPrimitiveValue())
         state.setTextOrientation(*toCSSPrimitiveValue(value));
 }
 
 } // namespace blink