[Web Payments] Implement the CVC Unmask dialog.

chrome/test/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/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 2136 matching lines @@
       sources += [
         "../browser/payments/site_per_process_payments_browsertest.cc",
         "../browser/ui/global_error/global_error_service_browsertest.cc",
         "../browser/ui/views/bookmarks/bookmark_editor_view_browsertest.cc",
         "../browser/ui/views/extensions/extension_message_bubble_view_browsertest.cc",
         "../browser/ui/views/external_protocol_dialog_browsertest.cc",
         "../browser/ui/views/frame/browser_non_client_frame_view_browsertest_win.cc",
         "../browser/ui/views/frame/browser_window_property_manager_browsertest_win.cc",
         "../browser/ui/views/location_bar/content_setting_bubble_dialog_browsertest.cc",
         "../browser/ui/views/payments/credit_card_editor_view_controller_browsertest.cc",
+        "../browser/ui/views/payments/cvc_unmask_view_controller_browsertest.cc",
         "../browser/ui/views/payments/error_message_view_controller_browsertest.cc",
         "../browser/ui/views/payments/order_summary_view_controller_browsertest.cc",
         "../browser/ui/views/payments/payment_method_view_controller_browsertest.cc",
         "../browser/ui/views/payments/payment_request_browsertest.cc",
         "../browser/ui/views/payments/payment_request_browsertest_base.cc",
         "../browser/ui/views/payments/payment_request_browsertest_base.h",
         "../browser/ui/views/payments/payment_request_can_make_payment_browsertest.cc",
         "../browser/ui/views/payments/payment_request_payment_response_browsertest.cc",
         "../browser/ui/views/payments/payment_sheet_view_controller_browsertest.cc",
         "../browser/ui/views/select_file_dialog_extension_browsertest.cc",
@@ skipping 3070 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }