Stop using CertStore which is not compatible with PlzNavigate.

ios/web/public/test/test_web_state.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 IOS_WEB_PUBLIC_TEST_TEST_WEB_STATE_H_
 #define IOS_WEB_PUBLIC_TEST_TEST_WEB_STATE_H_
 
 #include <stdint.h>
 
 #include <string>
@@ skipping 38 matching lines @@
   const GURL& GetLastCommittedURL() const override;
   GURL GetCurrentURL(URLVerificationTrustLevel* trust_level) const override;
   void ShowTransientContentView(CRWContentView* content_view) override {}
   void AddScriptCommandCallback(const ScriptCommandCallback& callback,
                                 const std::string& command_prefix) override {}
   void RemoveScriptCommandCallback(const std::string& command_prefix) override {
   }
   CRWWebViewProxyType GetWebViewProxy() const override;
   bool IsShowingWebInterstitial() const override;
   WebInterstitial* GetWebInterstitial() const override;
-  int GetCertGroupId() const override;
   void AddObserver(WebStateObserver* observer) override {}
   void RemoveObserver(WebStateObserver* observer) override {}
   void AddPolicyDecider(WebStatePolicyDecider* decider) override {}
   void RemovePolicyDecider(WebStatePolicyDecider* decider) override {}
   int DownloadImage(const GURL& url,
                     bool is_favicon,
                     uint32_t max_bitmap_size,
                     bool bypass_cache,
                     const ImageDownloadCallback& callback) override;
   shell::InterfaceRegistry* GetMojoInterfaceRegistry() override;
@@ skipping 12 matching lines @@
   base::string16 title_;
   URLVerificationTrustLevel trust_level_;
   bool content_is_html_;
   std::string mime_type_;
   std::string content_language_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_PUBLIC_TEST_TEST_WEB_STATE_H_