Fix virtual/override/final usage in Source/modules/.

Source/modules/indexeddb/IDBRequest.h

Index: Source/modules/indexeddb/IDBRequest.h
diff --git a/Source/modules/indexeddb/IDBRequest.h b/Source/modules/indexeddb/IDBRequest.h
index 8848943cad65e48eb17abae793f93efc4d371f78..5dceb8f8f2708a8282d7ef90911056ef025f5e07 100644
--- a/Source/modules/indexeddb/IDBRequest.h
+++ b/Source/modules/indexeddb/IDBRequest.h
@@ -62,7 +62,7 @@ class MODULES_EXPORT IDBRequest
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(IDBRequest);
 public:
     static IDBRequest* create(ScriptState*, IDBAny* source, IDBTransaction*);
-    virtual ~IDBRequest();
+    ~IDBRequest() override;
     DECLARE_VIRTUAL_TRACE();
 
     ScriptState* scriptState() { return m_scriptState.get(); }
@@ -110,16 +110,16 @@ public:
     virtual void onSuccess(PassOwnPtr<WebIDBDatabase>, const IDBDatabaseMetadata&) { ASSERT_NOT_REACHED(); }
 
     // ActiveDOMObject
-    virtual bool hasPendingActivity() const override final;
-    virtual void stop() override final;
+    bool hasPendingActivity() const final;
+    void stop() final;
 
     // EventTarget
-    virtual const AtomicString& interfaceName() const override;
-    virtual ExecutionContext* executionContext() const override final;
-    virtual void uncaughtExceptionInEventHandler() override final;
+    const AtomicString& interfaceName() const override;
+    ExecutionContext* executionContext() const final;
+    void uncaughtExceptionInEventHandler() final;
 
     using EventTarget::dispatchEvent;
-    virtual bool dispatchEvent(PassRefPtrWillBeRawPtr<Event>) override;
+    bool dispatchEvent(PassRefPtrWillBeRawPtr<Event>) override;
 
     // Called by a version change transaction that has finished to set this
     // request back from DONE (following "upgradeneeded") back to PENDING (for