PlzNavigate: sanitize the referrer in NavigationRequest

content/shell/browser/shell_network_delegate.h

 // Copyright 2013 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 CONTENT_SHELL_BROWSER_SHELL_NETWORK_DELEGATE_H_
 #define CONTENT_SHELL_BROWSER_SHELL_NETWORK_DELEGATE_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "net/base/network_delegate_impl.h"
 
 namespace content {
 
 class ShellNetworkDelegate : public net::NetworkDelegateImpl {
  public:
   ShellNetworkDelegate();
   ~ShellNetworkDelegate() override;
 
   static void SetBlockThirdPartyCookies(bool block);
+  static void SetCancelURLRequestWithPolicyViolatingReferrerHeader(bool cancel);
 
  private:
   // net::NetworkDelegate implementation.
   int OnBeforeURLRequest(net::URLRequest* request,
                          const net::CompletionCallback& callback,
                          GURL* new_url) override;
   int OnBeforeStartTransaction(net::URLRequest* request,
                                const net::CompletionCallback& callback,
                                net::HttpRequestHeaders* headers) override;
   void OnStartTransaction(net::URLRequest* request,
@@ skipping 18 matching lines @@
       const AuthCallback& callback,
       net::AuthCredentials* credentials) override;
   bool OnCanGetCookies(const net::URLRequest& request,
                        const net::CookieList& cookie_list) override;
   bool OnCanSetCookie(const net::URLRequest& request,
                       const std::string& cookie_line,
                       net::CookieOptions* options) override;
   bool OnCanAccessFile(const net::URLRequest& request,
                        const base::FilePath& path) const override;
   bool OnAreExperimentalCookieFeaturesEnabled() const override;
+  bool OnCancelURLRequestWithPolicyViolatingReferrerHeader(
+      const net::URLRequest& request,
+      const GURL& target_url,
+      const GURL& referrer_url) const override;
 
   DISALLOW_COPY_AND_ASSIGN(ShellNetworkDelegate);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_BROWSER_SHELL_NETWORK_DELEGATE_H_