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

Source/modules/battery/BatteryManager.h

Index: Source/modules/battery/BatteryManager.h
diff --git a/Source/modules/battery/BatteryManager.h b/Source/modules/battery/BatteryManager.h
index d197e6d83268b52cb378f6d00e7b3a006d4ae6ca..8c421a3ffe247e6720e1fbbf3741eacd1c956fcc 100644
--- a/Source/modules/battery/BatteryManager.h
+++ b/Source/modules/battery/BatteryManager.h
@@ -23,14 +23,14 @@ class BatteryManager final : public RefCountedGarbageCollectedEventTargetWithInl
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(BatteryManager);
 public:
     static BatteryManager* create(ExecutionContext*);
-    virtual ~BatteryManager();
+    ~BatteryManager() override;
 
     // Returns a promise object that will be resolved with this BatteryManager.
     ScriptPromise startRequest(ScriptState*);
 
     // EventTarget implementation.
-    virtual const WTF::AtomicString& interfaceName() const override { return EventTargetNames::BatteryManager; }
-    virtual ExecutionContext* executionContext() const override { return ContextLifecycleObserver::executionContext(); }
+    const WTF::AtomicString& interfaceName() const override { return EventTargetNames::BatteryManager; }
+    ExecutionContext* executionContext() const override { return ContextLifecycleObserver::executionContext(); }
 
     bool charging();
     double chargingTime();
@@ -43,16 +43,16 @@ public:
     DEFINE_ATTRIBUTE_EVENT_LISTENER(levelchange);
 
     // Inherited from PlatformEventController.
-    virtual void didUpdateData() override;
-    virtual void registerWithDispatcher() override;
-    virtual void unregisterWithDispatcher() override;
-    virtual bool hasLastData() override;
+    void didUpdateData() override;
+    void registerWithDispatcher() override;
+    void unregisterWithDispatcher() override;
+    bool hasLastData() override;
 
     // ActiveDOMObject implementation.
-    virtual void suspend() override;
-    virtual void resume() override;
-    virtual void stop() override;
-    virtual bool hasPendingActivity() const override;
+    void suspend() override;
+    void resume() override;
+    void stop() override;
+    bool hasPendingActivity() const override;
 
     DECLARE_VIRTUAL_TRACE();