Add InfoBarPickerController for displaying a picker view from an infobar

ios/chrome/browser/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//ios/web/js_compile.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 declare_args() {
   google_test_gaia_client_id = ""
@@ skipping 184 matching lines @@
     "infobars/infobar.h",
     "infobars/infobar.mm",
     "infobars/infobar_container_ios.h",
     "infobars/infobar_container_ios.mm",
     "infobars/infobar_container_view.h",
     "infobars/infobar_container_view.mm",
     "infobars/infobar_controller.h",
     "infobars/infobar_controller.mm",
     "infobars/infobar_manager_impl.h",
     "infobars/infobar_manager_impl.mm",
+    "infobars/infobar_picker_coordinator.h",
+    "infobars/infobar_picker_coordinator.mm",
+    "infobars/infobar_picker_view_controller.h",
+    "infobars/infobar_picker_view_controller.mm",
     "infobars/infobar_utils.h",
     "infobars/infobar_utils.mm",
     "install_time_util.h",
     "install_time_util.mm",
     "installation_notifier.h",
     "installation_notifier.mm",
     "interstitials/ios_chrome_controller_client.h",
     "interstitials/ios_chrome_controller_client.mm",
     "interstitials/ios_chrome_metrics_helper.h",
     "interstitials/ios_chrome_metrics_helper.mm",
@@ skipping 603 matching lines @@
     "//ios/public/provider/chrome/browser:test_support",
     "//ios/web",
     "//net:test_support",
     "//sync",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/base",
     "//url",
   ]
 }