Stop using CertStore which is not compatible with PlzNavigate.

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base_static',
     '../cc/cc.gyp:cc',
     '../cc/cc.gyp:cc_surfaces',
     '../components/components.gyp:display_compositor',
@@ skipping 138 matching lines @@
       'public/browser/browser_plugin_guest_delegate.cc',
       'public/browser/browser_plugin_guest_delegate.h',
       'public/browser/browser_plugin_guest_manager.cc',
       'public/browser/browser_plugin_guest_manager.h',
       'public/browser/browser_ppapi_host.h',
       'public/browser/browser_thread.h',
       'public/browser/browser_thread_delegate.h',
       'public/browser/browser_url_handler.h',
       'public/browser/cache_storage_context.h',
       'public/browser/cache_storage_usage_info.h',
-      'public/browser/cert_store.h',
       'public/browser/certificate_request_result_type.h',
       'public/browser/child_process_data.h',
       'public/browser/child_process_security_policy.h',
       'public/browser/client_certificate_delegate.h',
       'public/browser/color_chooser.h',
       'public/browser/content_browser_client.cc',
       'public/browser/content_browser_client.h',
       'public/browser/context_factory.h',
       'public/browser/cookie_store_factory.h',
       'public/browser/desktop_media_id.cc',
@@ skipping 381 matching lines @@
       'browser/cache_storage/cache_storage_histogram_macros.h',
       'browser/cache_storage/cache_storage_manager.cc',
       'browser/cache_storage/cache_storage_manager.h',
       'browser/cache_storage/cache_storage_operation.cc',
       'browser/cache_storage/cache_storage_operation.h',
       'browser/cache_storage/cache_storage_quota_client.cc',
       'browser/cache_storage/cache_storage_quota_client.h',
       'browser/cache_storage/cache_storage_scheduler.cc',
       'browser/cache_storage/cache_storage_scheduler.h',
       'browser/cache_storage/cache_storage_scheduler_client.h',
-      'browser/cert_store_impl.cc',
-      'browser/cert_store_impl.h',
       'browser/child_process_launcher.cc',
       'browser/child_process_launcher.h',
       'browser/child_process_security_policy_impl.cc',
       'browser/child_process_security_policy_impl.h',
       'browser/cocoa/system_hotkey_helper_mac.h',
       'browser/cocoa/system_hotkey_helper_mac.mm',
       'browser/cocoa/system_hotkey_map.h',
       'browser/cocoa/system_hotkey_map.mm',
       # NOTE: These files are here instead of in compositor_browser_sources
       # because the latter is not built on Android, whereas these files are
@@ skipping 1545 matching lines @@
       ],
     }],
     ['OS != "mac" and OS != "android"', {
       'sources!': [
         'browser/gpu/gpu_surface_tracker.cc',
         'browser/gpu/gpu_surface_tracker.h',
       ],
     }],
   ],
 }