Remove 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 cff2cc07342cfaa6fe8d124e23ced36808fd91ed..7a035b5b21ccfd188cc5bb2615af712596d3dc62 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -709,8 +709,6 @@ public:
     bool hasMutationObservers() const { return m_mutationObserverTypes; }
     void addMutationObserverTypes(MutationObserverOptions types) { m_mutationObserverTypes |= types; }
 
-    CSSStyleDeclaration* getOverrideStyle() { return 0; }
-
     /**
      * Handles a HTTP header equivalent set by a meta tag using <meta http-equiv="..." content="...">. This is called
      * when a meta tag is encountered during document parsing, and also when a script dynamically changes or adds a meta