CSS Custom Properties (Variables)

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index 10b2414dba309341aab05bd0edb366ca1afd09f5..889c1134f227a74682dda22a964515c223e0ebf4 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -540,6 +540,7 @@ int UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(int id)
     case CSSPropertyRotate: return 505;
     case CSSPropertyScale: return 506;
     case CSSPropertyImageOrientation: return 507;
+    case CSSPropertyVariable: return 508;
 
     // 1. Add new features above this line (don't change the assigned numbers of the existing
     // items).
@@ -556,7 +557,7 @@ int UseCounter::mapCSSPropertyIdToCSSSampleIdForHistogram(int id)
     return 0;
 }
 
-static int maximumCSSSampleId() { return 507; }
+static int maximumCSSSampleId() { return 508; }
 
 void UseCounter::muteForInspector()
 {