Add operator== to CSSAnimationData.

third_party/WebKit/Source/core/style/StyleRareNonInheritedData.cpp

Index: third_party/WebKit/Source/core/style/StyleRareNonInheritedData.cpp
diff --git a/third_party/WebKit/Source/core/style/StyleRareNonInheritedData.cpp b/third_party/WebKit/Source/core/style/StyleRareNonInheritedData.cpp
index ecc25a64c31c6cc8775f71fab0872cd5df04d66f..362043eaef4ce14a27f1230d8c8800fe2f6e0c19 100644
--- a/third_party/WebKit/Source/core/style/StyleRareNonInheritedData.cpp
+++ b/third_party/WebKit/Source/core/style/StyleRareNonInheritedData.cpp
@@ -320,11 +320,7 @@ bool StyleRareNonInheritedData::ReflectionDataEquivalent(
 
 bool StyleRareNonInheritedData::AnimationDataEquivalent(
     const StyleRareNonInheritedData& o) const {
-  if (!animations_ && !o.animations_)
-    return true;
-  if (!animations_ || !o.animations_)
-    return false;
-  return animations_->AnimationsMatchForStyleRecalc(*o.animations_);
+  return DataEquivalent(animations_, o.animations_);
 }
 
 bool StyleRareNonInheritedData::TransitionDataEquivalent(