Stop using CertStore which is not compatible with PlzNavigate.

content/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/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//tools/ipc_fuzzer/ipc_fuzzer.gni")
 
 source_set("browser") {
@@ skipping 326 matching lines @@
     "cache_storage/cache_storage_histogram_macros.h",
     "cache_storage/cache_storage_manager.cc",
     "cache_storage/cache_storage_manager.h",
     "cache_storage/cache_storage_operation.cc",
     "cache_storage/cache_storage_operation.h",
     "cache_storage/cache_storage_quota_client.cc",
     "cache_storage/cache_storage_quota_client.h",
     "cache_storage/cache_storage_scheduler.cc",
     "cache_storage/cache_storage_scheduler.h",
     "cache_storage/cache_storage_scheduler_client.h",
-    "cert_store_impl.cc",
-    "cert_store_impl.h",
     "child_process_launcher.cc",
     "child_process_launcher.h",
     "child_process_security_policy_impl.cc",
     "child_process_security_policy_impl.h",
     "cocoa/system_hotkey_helper_mac.h",
     "cocoa/system_hotkey_helper_mac.mm",
     "cocoa/system_hotkey_map.h",
     "cocoa/system_hotkey_map.mm",
 
     # NOTE: These files are here instead of in compositor_browser_sources
@@ skipping 1569 matching lines @@
   if (!is_component_build) {
     public_deps = [
       ":browser",
     ]
   } else {
     public_deps = [
       "//third_party/leveldatabase",
     ]
   }
 }