Create security_interstitials::ControllerClient

components/security_interstitials.gypi

 # Copyright 2015 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.
 
 {
   'targets': [
     {
       # GN version: //components/security_interstitials/core
       'target_name': 'security_interstitials_core',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../net/net.gyp:net',
+        '../ui/base/ui_base.gyp:ui_base',
+        'components_strings.gyp:components_strings',
+        'google_core_browser',
         'history_core_browser',
         'metrics',
         'rappor',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         # Note: sources list duplicated in GN build.
+        'security_interstitials/core/controller_client.cc',
+        'security_interstitials/core/controller_client.h',
         'security_interstitials/core/metrics_helper.cc',
         'security_interstitials/core/metrics_helper.h',
       ]
     }
   ]
 }