Update inspector classes to use OVERRIDE / FINAL when needed

Source/core/inspector/InspectorHistory.cpp

Index: Source/core/inspector/InspectorHistory.cpp
diff --git a/Source/core/inspector/InspectorHistory.cpp b/Source/core/inspector/InspectorHistory.cpp
index e882744b08450911b01b7a7ebbfd0f34d238ae8a..556d4bbb40331ca7bbe2fc4cb7233299ac659f6a 100644
--- a/Source/core/inspector/InspectorHistory.cpp
+++ b/Source/core/inspector/InspectorHistory.cpp
@@ -39,17 +39,17 @@ namespace WebCore {
 
 namespace {
 
-class UndoableStateMark : public InspectorHistory::Action {
+class UndoableStateMark FINAL : public InspectorHistory::Action {
 public:
     UndoableStateMark() : InspectorHistory::Action("[UndoableState]") { }
 
-    virtual bool perform(ExceptionState&) { return true; }
+    virtual bool perform(ExceptionState&) OVERRIDE { return true; }
 
-    virtual bool undo(ExceptionState&) { return true; }
+    virtual bool undo(ExceptionState&) OVERRIDE { return true; }
 
-    virtual bool redo(ExceptionState&) { return true; }
+    virtual bool redo(ExceptionState&) OVERRIDE { return true; }
 
-    virtual bool isUndoableStateMark() { return true; }
+    virtual bool isUndoableStateMark() OVERRIDE { return true; }
 };
 
 }