Stop using CertStore which is not compatible with PlzNavigate.

content/public/browser/cert_store.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 CONTENT_PUBLIC_BROWSER_CERT_STORE_H_
-#define CONTENT_PUBLIC_BROWSER_CERT_STORE_H_
-
-#include "base/memory/ref_counted.h"
-#include "content/common/content_export.h"
-
-namespace net {
-class X509Certificate;
-}
-
-namespace content {
-
-// The purpose of the cert store is to provide an easy way to store/retrieve
-// X509Certificate objects.  When stored, an X509Certificate object is
-// associated with a RenderProcessHost.  If all the RenderProcessHosts
-// associated with the cert have exited, the cert is removed from the store.
-// This class is used by the SSLManager to keep track of the certs associated
-// to loaded resources.
-// It can be accessed from the UI and IO threads (it is thread-safe).
-// Note that the cert ids will overflow if we register more than 2^32 - 1 certs
-// in 1 browsing session (which is highly unlikely to happen).
-class CertStore  {
- public:
-  // Returns the singleton instance of the CertStore.
-  CONTENT_EXPORT static CertStore* GetInstance();
-
-  // Stores the specified cert and returns the id associated with it.  The cert
-  // is associated to the specified RenderProcessHost.
-  // When all the RenderProcessHosts associated with a cert have exited, the
-  // cert is removed from the store.
-  // Note: ids starts at 1.
-  virtual int StoreCert(net::X509Certificate* cert,
-                        int render_process_host_id) = 0;
-
-  // Tries to retrieve the previously stored cert associated with the specified
-  // |cert_id|. Returns whether the cert could be found, and, if |cert| is
-  // non-nullptr, copies it in.
-  virtual bool RetrieveCert(int cert_id,
-                            scoped_refptr<net::X509Certificate>* cert) = 0;
-
- protected:
-   virtual ~CertStore() {}
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_CERT_STORE_H_