Add CSS support for font-variation-settings

third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp

Index: third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
diff --git a/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp b/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
index 77476654eb6539630a8f07256cb0ae05ba2ed03b..d629eb473dec51269dbdfd8655786ee106dd2679 100644
--- a/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
+++ b/third_party/WebKit/Source/core/css/resolver/StyleResolver.cpp
@@ -1282,7 +1282,11 @@ static inline bool isValidCueStyleProperty(CSSPropertyID id) {
     case CSSPropertyTextDecorationStyle:
     case CSSPropertyTextDecorationColor:
     case CSSPropertyTextDecorationSkip:
-      return RuntimeEnabledFeatures::css3TextDecorationsEnabled();
+      DCHECK(RuntimeEnabledFeatures::css3TextDecorationsEnabled());
+      return true;
+    case CSSPropertyFontVariationSettings:
+      DCHECK(RuntimeEnabledFeatures::cssVariableFontsEnabled());
+      return true;
     default:
       break;
   }
@@ -1385,8 +1389,11 @@ static inline bool isValidFirstLetterStyleProperty(CSSPropertyID id) {
     case CSSPropertyWebkitMarginTopCollapse:
     case CSSPropertyWordSpacing:
       return true;
+    case CSSPropertyFontVariationSettings:
+      DCHECK(RuntimeEnabledFeatures::cssVariableFontsEnabled());
+      return true;
     case CSSPropertyTextDecoration:
-      DCHECK(!RuntimeEnabledFeatures::css3TextDecorationsEnabled());
+      DCHECK(RuntimeEnabledFeatures::css3TextDecorationsEnabled());
       return true;
     case CSSPropertyTextDecorationColor:
     case CSSPropertyTextDecorationLine: