Update inspector classes to use OVERRIDE / FINAL when needed

Source/core/inspector/PageConsoleAgent.h

Index: Source/core/inspector/PageConsoleAgent.h
diff --git a/Source/core/inspector/PageConsoleAgent.h b/Source/core/inspector/PageConsoleAgent.h
index 4cca69520177bf6b609502df634081d1f03cfd81..d6e7fb1a11d1d2e0631c0f7138a06c9746cd41d9 100644
--- a/Source/core/inspector/PageConsoleAgent.h
+++ b/Source/core/inspector/PageConsoleAgent.h
@@ -38,7 +38,7 @@ namespace WebCore {
 
 class InspectorDOMAgent;
 
-class PageConsoleAgent : public InspectorConsoleAgent {
+class PageConsoleAgent FINAL : public InspectorConsoleAgent {
     WTF_MAKE_NONCOPYABLE(PageConsoleAgent);
 public:
     static PassOwnPtr<PageConsoleAgent> create(InstrumentingAgents* instrumentingAgents, InspectorCompositeState* state, InjectedScriptManager* injectedScriptManager, InspectorDOMAgent* domAgent, InspectorTimelineAgent* timelineAgent)
@@ -51,8 +51,8 @@ public:
 
 private:
     PageConsoleAgent(InstrumentingAgents*, InspectorCompositeState*, InjectedScriptManager*, InspectorDOMAgent*, InspectorTimelineAgent*);
-    virtual void clearMessages(ErrorString*);
-    virtual void addInspectedNode(ErrorString*, int nodeId);
+    virtual void clearMessages(ErrorString*) OVERRIDE;
+    virtual void addInspectedNode(ErrorString*, int nodeId) OVERRIDE;
 
     InspectorDOMAgent* m_inspectorDOMAgent;
 };