Properties labelled !important must be ignored in keyframes

Source/core/css/parser/CSSPropertyParser.cpp

 /*
  * Copyright (C) 2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Nicholas Shanks <webkit@nickshanks.com>
  * Copyright (C) 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
  * Copyright (C) 2012 Intel Corporation. All rights reserved.
  *
@@ skipping 92 matching lines @@
     int parsedPropertiesSize = parsedProperties.size();
 
     CSSPropertyParser parser(valueList, context, parsedProperties, ruleType);
     CSSPropertyID resolvedProperty = resolveCSSPropertyID(unresolvedProperty);
     bool parseSuccess;
 
     if (ruleType == StyleRule::Viewport) {
         parseSuccess = (RuntimeEnabledFeatures::cssViewportEnabled() || isUASheetBehavior(context.mode()))
             && parser.parseViewportProperty(resolvedProperty, important);
     } else if (ruleType == StyleRule::FontFace) {
-        parseSuccess = !important && parser.parseFontFaceDescriptor(resolvedProperty);
+        parseSuccess = parser.parseFontFaceDescriptor(resolvedProperty);
     } else {
         parseSuccess = parser.parseValue(unresolvedProperty, important);
     }
 
     // This doesn't count UA style sheets
     if (parseSuccess && context.useCounter())
         context.useCounter()->count(context, unresolvedProperty);
 
     if (!parseSuccess)
         parser.rollbackLastProperties(parsedProperties.size() - parsedPropertiesSize);
@@ skipping 8276 matching lines @@
         }
     }
 
     if (!list->length())
         return nullptr;
 
     return list.release();
 }
 
 } // namespace blink