Apply custom property animation

third_party/WebKit/Source/core/animation/EffectStack.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 82 matching lines @@
     // TODO(dstockwell): move the playing check into AnimationEffectReadOnly and
     // expose both hasAnimations and hasActiveAnimations
     if (sampledEffect->effect() &&
         sampledEffect->effect()->animation()->playing() &&
         sampledEffect->effect()->hasActiveAnimationsOnCompositor(property))
       return true;
   }
   return false;
 }
 
+bool EffectStack::affectsProperties(PropertyHandleFilter filter) const {
+  for (const auto& sampledEffect : m_sampledEffects) {
+    for (const auto& interpolation : sampledEffect->interpolations()) {
+      if (filter(interpolation->getProperty()))
+        return true;
+    }
+  }
+  return false;
+}
+
 ActiveInterpolationsMap EffectStack::activeInterpolations(
     EffectStack* effectStack,
     const HeapVector<Member<const InertEffect>>* newAnimations,
     const HeapHashSet<Member<const Animation>>* suppressedAnimations,
     KeyframeEffectReadOnly::Priority priority,
     PropertyHandleFilter propertyHandleFilter) {
   ActiveInterpolationsMap result;
 
   if (effectStack) {
     HeapVector<Member<SampledEffect>>& sampledEffects =
@@ skipping 59 matching lines @@
       if (!CompositorAnimations::getAnimatedBoundingBox(
               expandingBox, *effect->model(), startRange, endRange))
         return false;
       box.expandTo(expandingBox);
     }
   }
   return true;
 }
 
 }  // namespace blink