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

Source/modules/quota/DeprecatedStorageQuotaCallbacksImpl.h

Index: Source/modules/quota/DeprecatedStorageQuotaCallbacksImpl.h
diff --git a/Source/modules/quota/DeprecatedStorageQuotaCallbacksImpl.h b/Source/modules/quota/DeprecatedStorageQuotaCallbacksImpl.h
index 7ea28f46a09360699a226a69826c354bae30a8ba..5b80d08a7732469dfebee5b772b93b7da8c0720c 100644
--- a/Source/modules/quota/DeprecatedStorageQuotaCallbacksImpl.h
+++ b/Source/modules/quota/DeprecatedStorageQuotaCallbacksImpl.h
@@ -54,12 +54,12 @@ public:
         return new DeprecatedStorageQuotaCallbacksImpl(success, error);
     }
 
-    virtual ~DeprecatedStorageQuotaCallbacksImpl();
+    ~DeprecatedStorageQuotaCallbacksImpl() override;
     DECLARE_VIRTUAL_TRACE();
 
-    virtual void didQueryStorageUsageAndQuota(unsigned long long usageInBytes, unsigned long long quotaInBytes) override;
-    virtual void didGrantStorageQuota(unsigned long long usageInBytes, unsigned long long grantedQuotaInBytes) override;
-    virtual void didFail(WebStorageQuotaError) override;
+    void didQueryStorageUsageAndQuota(unsigned long long usageInBytes, unsigned long long quotaInBytes) override;
+    void didGrantStorageQuota(unsigned long long usageInBytes, unsigned long long grantedQuotaInBytes) override;
+    void didFail(WebStorageQuotaError) override;
 
 private:
     DeprecatedStorageQuotaCallbacksImpl(StorageUsageCallback*, StorageErrorCallback*);