Web Animations CSS: Support Animation of StyleImage and LengthBox

Source/core/css/resolver/StyleResolver.cpp

 /*
  * 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.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 811 matching lines @@
         RefPtr<Keyframe> firstOffsetKeyframe;
         for (size_t j = 0; j < offsets.size(); ++j) {
             RefPtr<Keyframe> keyframe = Keyframe::create();
             keyframe->setOffset(offsets[j]);
             const StylePropertySet* properties = styleKeyframe->properties();
             for (unsigned k = 0; k < properties->propertyCount(); k++) {
                 CSSPropertyID property = properties->propertyAt(k).id();
                 // FIXME: Build the correct chained timing function when this property is specified.
                 if (property == CSSPropertyWebkitAnimationTimingFunction || property == CSSPropertyAnimationTimingFunction)
                     continue;
+                if (!CSSAnimations::isAnimatableProperty(property))
+                    continue;
                 keyframe->setPropertyValue(property, firstOffsetKeyframe ? firstOffsetKeyframe->propertyValue(property) : CSSAnimatableValueFactory::create(property, keyframeStyle.get()).get());
             }
             if (!firstOffsetKeyframe)
                 firstOffsetKeyframe = keyframe;
             keyframes.append(keyframe);
         }
     }
 
     if (keyframes.isEmpty())
         return;
@@ skipping 689 matching lines @@
         m_matchedPropertiesSearches, m_matchedPropertiesHit, m_matchedPropertiesSharedInheritedHit, m_matchedPropertiesToCache, m_matchedPropertiesEnteredIntoCache);
 
     fprintf(stderr, "Total:\n");
     printStyleStats(m_totalSearches, m_totalElementsEligibleForSharing, m_totalStylesShared, m_totalSearchFoundSiblingForSharing, m_totalSearchesMissedSharing,
         m_totalMatchedPropertiesSearches, m_totalMatchedPropertiesHit, m_totalMatchedPropertiesSharedInheritedHit, m_totalMatchedPropertiesToCache, m_totalMatchedPropertiesEnteredIntoCache);
     fprintf(stderr, "--------------------------------------------------------------------------------\n");
 }
 #endif
 
 } // namespace WebCore