Update from https://crrev.com/309717

net/base/network_delegate_impl.h

 // Copyright 2014 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_BASE_NETWORK_DELEGATE_IMPL_H_
 #define NET_BASE_NETWORK_DELEGATE_IMPL_H_
 
 #include "base/strings/string16.h"
 #include "net/base/completion_callback.h"
 #include "net/base/network_delegate.h"
@@ skipping 10 matching lines @@
 class CookieOptions;
 class HttpRequestHeaders;
 class HttpResponseHeaders;
 class ProxyInfo;
 class ProxyServer;
 class ProxyService;
 class URLRequest;
 
 class NET_EXPORT NetworkDelegateImpl : public NetworkDelegate {
  public:
-  virtual ~NetworkDelegateImpl() {}
+  ~NetworkDelegateImpl() override {}
 
  private:
   // This is the interface for subclasses of NetworkDelegate to implement. These
   // member functions will be called by the respective public notification
   // member function, which will perform basic sanity checking.
 
   // Called before a request is sent. Allows the delegate to rewrite the URL
   // being fetched by modifying |new_url|. If set, the URL must be valid. The
   // reference fragment from the original URL is not automatically appended to
   // |new_url|; callers are responsible for copying the reference fragment if
@@ skipping 149 matching lines @@
   // header is stripped from the request.
   bool OnCancelURLRequestWithPolicyViolatingReferrerHeader(
       const URLRequest& request,
       const GURL& target_url,
       const GURL& referrer_url) const override;
 };
 
 }  // namespace net
 
 #endif  // NET_BASE_NETWORK_DELEGATE_IMPL_H_