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 529b3f6ae1bffa27afe43ca1af4efcf5ea6f9a8a..34d64e1ee77b5a450a82953a7ae472e289a7f9b4 100644
--- a/third_party/WebKit/Source/core/frame/UseCounter.h
+++ b/third_party/WebKit/Source/core/frame/UseCounter.h
@@ -1118,6 +1118,10 @@ 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&, const String&);
+    bool isCounted(CSSPropertyID);
 
     void didCommitLoad();