Add a UseCounter for Document.getOverrideStyle()

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index 00b5f305ef5a201996fcb366544384e5c85382bf..119604a46bb0ad5899fecf0905764c7d81466f73 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -706,7 +706,7 @@ public:
     bool hasMutationObservers() const { return m_mutationObserverTypes; }
     void addMutationObserverTypes(MutationObserverOptions types) { m_mutationObserverTypes |= types; }
 
-    CSSStyleDeclaration* getOverrideStyle(Element*, const String& pseudoElt);
+    CSSStyleDeclaration* getOverrideStyle() { return 0; }
 
     /**
      * Handles a HTTP header equivalent set by a meta tag using <meta http-equiv="..." content="...">. This is called