Fix virtual/override/final usage in the rest of Source/core/.

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index 45d9b1cb7fc102c5e89197218d8b7074557640b6..340bc3eeb1647dc8f710e7520a6ddbcca27755bb 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -2111,7 +2111,7 @@ void InspectorDOMAgent::pushNodesByBackendIdsToFrontend(ErrorString* errorString
 class InspectableNode final : public InjectedScriptHost::InspectableObject {
 public:
     explicit InspectableNode(Node* node) : m_node(node) { }
-    virtual ScriptValue get(ScriptState* state) override
+    ScriptValue get(ScriptState* state) override
     {
         return InjectedScriptHost::nodeAsScriptValue(state, m_node);
     }