Add internals.isCSSPropertyUseCounted functionality

third_party/WebKit/Source/core/frame/UseCounter.h

Index: third_party/WebKit/Source/core/frame/UseCounter.h
diff --git a/third_party/WebKit/Source/core/frame/UseCounter.h b/third_party/WebKit/Source/core/frame/UseCounter.h
index 5526acd713def1383b540a3181493155a879589b..443cec8de985938935c604ac8c273454bf3b781f 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -1120,6 +1120,10 @@ public:
     // Return whether the Feature was previously counted for this document.
     // NOTE: only for use in testing.
     static bool isCounted(Document&, Feature);
+    // Return whether the CSSPropertyID was previously counted for this document.
+    // NOTE: only for use in testing.
+    static bool isCounted(Document&, CSSPropertyID);
+    bool isCounted(CSSPropertyID);
 
     void didCommitLoad();