Standardize usage of virtual/override/final in chrome/

chrome/test/chromedriver/net/net_util_unittest.cc

Index: chrome/test/chromedriver/net/net_util_unittest.cc
diff --git a/chrome/test/chromedriver/net/net_util_unittest.cc b/chrome/test/chromedriver/net/net_util_unittest.cc
index e06de3c98a1f93229999fbebc5cc76dc2cd49e23..a8960ddcf03b24fcdb1d7c62d4022765624f033b 100644
--- a/chrome/test/chromedriver/net/net_util_unittest.cc
+++ b/chrome/test/chromedriver/net/net_util_unittest.cc
@@ -70,10 +70,10 @@ class FetchUrlTest : public testing::Test,
   }
 
   // Overridden from net::HttpServer::Delegate:
-  virtual void OnConnect(int connection_id) override {}
+  void OnConnect(int connection_id) override {}
 
-  virtual void OnHttpRequest(int connection_id,
-                             const net::HttpServerRequestInfo& info) override {
+  void OnHttpRequest(int connection_id,
+                     const net::HttpServerRequestInfo& info) override {
     switch (response_) {
       case kSendHello:
         server_->Send200(connection_id, "hello", "text/plain");
@@ -89,12 +89,11 @@ class FetchUrlTest : public testing::Test,
     }
   }
 
-  virtual void OnWebSocketRequest(
-      int connection_id,
-      const net::HttpServerRequestInfo& info) override {}
-  virtual void OnWebSocketMessage(int connection_id,
-                                  const std::string& data) override {}
-  virtual void OnClose(int connection_id) override {}
+  void OnWebSocketRequest(int connection_id,
+                          const net::HttpServerRequestInfo& info) override {}
+  void OnWebSocketMessage(int connection_id, const std::string& data) override {
+  }
+  void OnClose(int connection_id) override {}
 
  protected:
   enum ServerResponse {