Standardize usage of virtual/override/final in net/

net/test/embedded_test_server/http_response.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef NET_TEST_EMBEDDED_TEST_SERVER_HTTP_RESPONSE_H_
 #define NET_TEST_EMBEDDED_TEST_SERVER_HTTP_RESPONSE_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 14 matching lines @@
   // in response. If you intend to make this a valid HTTP response,
   // it should start with "HTTP/x.x" line, followed by response headers.
   virtual std::string ToResponseString() const = 0;
 };
 
 // This class is used to handle basic HTTP responses with commonly used
 // response headers such as "Content-Type".
 class BasicHttpResponse : public HttpResponse {
  public:
   BasicHttpResponse();
-  virtual ~BasicHttpResponse();
+  ~BasicHttpResponse() override;
 
   // The response code.
   HttpStatusCode code() const { return code_; }
   void set_code(HttpStatusCode code) { code_ = code; }
 
   // The content of the response.
   const std::string& content() const { return content_; }
   void set_content(const std::string& content) { content_ = content; }
 
   // The content type.
   const std::string& content_type() const { return content_type_; }
   void set_content_type(const std::string& content_type) {
     content_type_ = content_type;
   }
 
   // Adds a custom header.
   void AddCustomHeader(const std::string& key, const std::string& value) {
     custom_headers_.push_back(std::make_pair(key, value));
   }
 
   // Generates and returns a http response string.
-  virtual std::string ToResponseString() const override;
+  std::string ToResponseString() const override;
 
  private:
   HttpStatusCode code_;
   std::string content_;
   std::string content_type_;
   std::vector<std::pair<std::string, std::string> > custom_headers_;
 
   DISALLOW_COPY_AND_ASSIGN(BasicHttpResponse);
 };
 
 }  // namespace test_server
 }  // namespace net
 
 #endif  // NET_TEST_EMBEDDED_TEST_SERVER_HTTP_RESPONSE_H_