Enable interpolation of CSS property font-variation-settings

third_party/WebKit/Source/core/css/CSSPropertyEquality.cpp

Index: third_party/WebKit/Source/core/css/CSSPropertyEquality.cpp
diff --git a/third_party/WebKit/Source/core/css/CSSPropertyEquality.cpp b/third_party/WebKit/Source/core/css/CSSPropertyEquality.cpp
index b8d4d95968bc403b86cc88306a445a8a4acc5f3e..e24233885dfcc757db449f8f364c7223a71c1004 100644
--- a/third_party/WebKit/Source/core/css/CSSPropertyEquality.cpp
+++ b/third_party/WebKit/Source/core/css/CSSPropertyEquality.cpp
@@ -161,6 +161,9 @@ bool CSSPropertyEquality::PropertiesEqual(CSSPropertyID prop,
       return a.FontSizeAdjust() == b.FontSizeAdjust();
     case CSSPropertyFontStretch:
       return a.GetFontStretch() == b.GetFontStretch();
+    case CSSPropertyFontVariationSettings:
+      return DataEquivalent(a.GetFontDescription().VariationSettings(),
+                            b.GetFontDescription().VariationSettings());
     case CSSPropertyFontWeight:
       return a.GetFontWeight() == b.GetFontWeight();
     case CSSPropertyHeight: