Stop using CertStore which is not compatible with PlzNavigate.

chrome/browser/ui/website_settings/website_settings_ui.h

Index: chrome/browser/ui/website_settings/website_settings_ui.h
diff --git a/chrome/browser/ui/website_settings/website_settings_ui.h b/chrome/browser/ui/website_settings/website_settings_ui.h
index 2a6918e2d6478795400d24bdbc5a113e022e3294..71fe27b3c7b6dec0bfbaa7a4c15d90a800a5dd76 100644
--- a/chrome/browser/ui/website_settings/website_settings_ui.h
+++ b/chrome/browser/ui/website_settings/website_settings_ui.h
@@ -28,6 +28,10 @@ namespace gfx {
 class Image;
 }
 
+namespace net {
+class X509Certificate;
+}
+
 // The class |WebsiteSettingsUI| specifies the platform independent
 // interface of the website settings UI. The website settings UI displays
 // information and controls for site specific data (local stored objects like
@@ -104,8 +108,8 @@ class WebsiteSettingsUI {
     // Textual description of the site's identity status that is displayed to
     // the user.
     std::string identity_status_description;
-    // The ID is the server certificate of a secure connection or 0.
-    int cert_id;
+    // The server certificate if a secure connection.
+    scoped_refptr<net::X509Certificate> certificate;
     // Status of the site's connection.
     WebsiteSettings::SiteConnectionStatus connection_status;
     // Textual description of the site's connection status that is displayed to