Stop using CertStore which is not compatible with PlzNavigate.

content/public/browser/BUILD.gn

 # 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.
 
 import("//build/config/ui.gni")
 
 # See //content/BUILD.gn for how this works.
 group("browser") {
   if (is_component_build) {
     public_deps = [
@@ skipping 56 matching lines @@
     "browser_plugin_guest_delegate.cc",
     "browser_plugin_guest_delegate.h",
     "browser_plugin_guest_manager.cc",
     "browser_plugin_guest_manager.h",
     "browser_ppapi_host.h",
     "browser_thread.h",
     "browser_thread_delegate.h",
     "browser_url_handler.h",
     "cache_storage_context.h",
     "cache_storage_usage_info.h",
-    "cert_store.h",
     "certificate_request_result_type.h",
     "child_process_data.h",
     "child_process_security_policy.h",
     "client_certificate_delegate.h",
     "color_chooser.h",
     "content_browser_client.cc",
     "content_browser_client.h",
     "context_factory.h",
     "cookie_store_factory.h",
     "desktop_media_id.cc",
@@ skipping 220 matching lines @@
 
   if (is_android) {
     deps += [ "//ui/android" ]
   }
 
   if (use_aura) {
     sources -= [ "context_factory.h" ]
     deps += [ "//ui/aura" ]
   }
 }