Add module for counting date-last-roll-call and persisting those counts

components/update_client/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.
 
 source_set("update_client") {
   sources = [
     "action.cc",
     "action.h",
     "action_update.cc",
     "action_update.h",
     "action_update_check.cc",
     "action_update_check.h",
     "action_wait.cc",
     "action_wait.h",
     "background_downloader_win.cc",
     "background_downloader_win.h",
     "component_patcher.cc",
     "component_patcher.h",
     "component_patcher_operation.cc",
     "component_patcher_operation.h",
     "component_unpacker.cc",
     "component_unpacker.h",
     "configurator.h",
     "crx_downloader.cc",
     "crx_downloader.h",
     "crx_update_item.h",
+    "persisted_data.cc",
+    "persisted_data.h",
     "ping_manager.cc",
     "ping_manager.h",
     "request_sender.cc",
     "request_sender.h",
     "task.h",
     "task_update.cc",
     "task_update.h",
     "update_checker.cc",
     "update_checker.h",
     "update_client.cc",
@@ skipping 10 matching lines @@
     "url_fetcher_downloader.cc",
     "url_fetcher_downloader.h",
     "utils.cc",
     "utils.h",
   ]
 
   deps = [
     "//base",
     "//components/client_update_protocol",
     "//components/crx_file",
+    "//components/prefs",
     "//courgette:courgette_lib",
     "//crypto",
     "//net",
     "//third_party/libxml",
     "//third_party/zlib:zip",
     "//url",
   ]
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
     "test_configurator.cc",
     "test_configurator.h",
     "test_installer.cc",
     "test_installer.h",
     "url_request_post_interceptor.cc",
     "url_request_post_interceptor.h",
   ]
 
   public_deps = [
     ":update_client",
   ]
   deps = [
     "//base",
+    "//components/prefs",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//url",
   ]
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "component_patcher_unittest.cc",
     "crx_downloader_unittest.cc",
+    "persisted_data_unittest.cc",
     "ping_manager_unittest.cc",
     "request_sender_unittest.cc",
     "update_checker_unittest.cc",
     "update_client_unittest.cc",
     "update_query_params_unittest.cc",
     "update_response_unittest.cc",
     "utils_unittest.cc",
   ]
 
   deps = [
     ":test_support",
     ":update_client",
     "//base",
+    "//components/prefs",
+    "//components/prefs:test_support",
     "//courgette:courgette_lib",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/libxml",
   ]
 }