Extend PropertyHandle to include custom property identifiers

third_party/WebKit/Source/core/animation/css/CSSAnimations.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 107 matching lines @@
         DCHECK_NE(property, CSSPropertyInvalid);
         propertyHistogram.sample(UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(property));
     }
 
     // Merge duplicate keyframes.
     std::stable_sort(keyframes.begin(), keyframes.end(), Keyframe::compareOffsets);
     size_t targetIndex = 0;
     for (size_t i = 1; i < keyframes.size(); i++) {
         if (keyframes[i]->offset() == keyframes[targetIndex]->offset()) {
             for (const auto& property : keyframes[i]->properties())
-                keyframes[targetIndex]->setCSSPropertyValue(property.cssProperty(), keyframes[i]->cssPropertyValue(property.cssProperty()));
+                keyframes[targetIndex]->setCSSPropertyValue(property.cssProperty(), keyframes[i]->cssPropertyValue(property));
         } else {
             targetIndex++;
             keyframes[targetIndex] = keyframes[i];
         }
     }
     if (!keyframes.isEmpty())
         keyframes.shrink(targetIndex + 1);
 
     // Add 0% and 100% keyframes if absent.
     RefPtr<StringKeyframe> startKeyframe = keyframes.isEmpty() ? nullptr : keyframes[0];
@@ skipping 758 matching lines @@
 }
 
 DEFINE_TRACE(CSSAnimations)
 {
     visitor->trace(m_transitions);
     visitor->trace(m_pendingUpdate);
     visitor->trace(m_runningAnimations);
 }
 
 } // namespace blink