Standardize usage of virtual/override/final in net/

net/test/url_request/url_request_mock_http_job.cc

Index: net/test/url_request/url_request_mock_http_job.cc
diff --git a/net/test/url_request/url_request_mock_http_job.cc b/net/test/url_request/url_request_mock_http_job.cc
index c611f36530bab8e49b2ad93397fbfe1ad65fe5a4..5542ac7343d91285940fced92993fd149a4bb7e9 100644
--- a/net/test/url_request/url_request_mock_http_job.cc
+++ b/net/test/url_request/url_request_mock_http_job.cc
@@ -37,10 +37,10 @@ class MockJobInterceptor : public net::URLRequestInterceptor {
       : base_path_(base_path),
         map_all_requests_to_base_path_(map_all_requests_to_base_path),
         worker_pool_(worker_pool) {}
-  virtual ~MockJobInterceptor() {}
+  ~MockJobInterceptor() override {}
 
   // net::URLRequestJobFactory::ProtocolHandler implementation
-  virtual net::URLRequestJob* MaybeInterceptRequest(
+  net::URLRequestJob* MaybeInterceptRequest(
       net::URLRequest* request,
       net::NetworkDelegate* network_delegate) const override {
     return new URLRequestMockHTTPJob(