Standardize usage of virtual/override/final in net/

net/url_request/url_request_filter.cc

Index: net/url_request/url_request_filter.cc
diff --git a/net/url_request/url_request_filter.cc b/net/url_request/url_request_filter.cc
index 04d61ccdde822906d9aa91ddb4d8ba76f2da3bb4..eaa3325fba38b1a13af28db2340b0902f99f1546 100644
--- a/net/url_request/url_request_filter.cc
+++ b/net/url_request/url_request_filter.cc
@@ -18,11 +18,12 @@ class URLRequestFilterInterceptor : public URLRequestInterceptor {
  public:
   explicit URLRequestFilterInterceptor(URLRequest::ProtocolFactory* factory)
       : factory_(factory) {}
-  virtual ~URLRequestFilterInterceptor() {}
+  ~URLRequestFilterInterceptor() override {}
 
   // URLRequestInterceptor implementation.
-  virtual URLRequestJob* MaybeInterceptRequest(
-      URLRequest* request, NetworkDelegate* network_delegate) const override {
+  URLRequestJob* MaybeInterceptRequest(
+      URLRequest* request,
+      NetworkDelegate* network_delegate) const override {
     return factory_(request, network_delegate, request->url().scheme());
   }