PlzNavigate: sanitize the referrer in NavigationRequest

content/shell/browser/shell_network_delegate.h

Index: content/shell/browser/shell_network_delegate.h
diff --git a/content/shell/browser/shell_network_delegate.h b/content/shell/browser/shell_network_delegate.h
index 65b2ee0d27ede59e99a66a3a0c31ec217529c5e7..1c809751fd6d7b241fc3bd213c9aaf71bd241579 100644
--- a/content/shell/browser/shell_network_delegate.h
+++ b/content/shell/browser/shell_network_delegate.h
@@ -17,6 +17,7 @@ class ShellNetworkDelegate : public net::NetworkDelegateImpl {
   ~ShellNetworkDelegate() override;
 
   static void SetBlockThirdPartyCookies(bool block);
+  static void SetCancelURLRequestWithPolicyViolatingReferrerHeader(bool cancel);
 
  private:
   // net::NetworkDelegate implementation.
@@ -55,6 +56,10 @@ class ShellNetworkDelegate : public net::NetworkDelegateImpl {
   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);
 };