Add Updater self-registration for macOS for Install & Promote

Currently the macOS updater code for //chrome/updater lacks self
registration. Adding self registration for Install and Promote
functionalities.

Bug: 1097373
Change-Id: I2a435b49cbcf76a32d6a4c38185b6b55e5c786b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2255124
Commit-Queue: Michael Chang <donchan@microsoft.com>
Reviewed-by: Joshua Pawlicki <waffles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#783055}

chrome/updater/mac/BUILD.gn

@@ -113,7 +113,9 @@ source_set("install_app") {
   deps = [
     ":updater_setup_sources",
     "//base",
+    "//chrome/updater:base",
     "//chrome/updater:lib",
+    "//chrome/updater:version_header",
   ]
 
   allow_circular_includes_from = [ "//chrome/updater:lib" ]

chrome/updater/mac/setup/install_app.cc

@@ -5,10 +5,18 @@
 #include "chrome/updater/mac/setup/install_app.h"
 
 #include "base/bind.h"
+#include "base/memory/ref_counted.h"
 #include "base/task/task_traits.h"
 #include "base/task/thread_pool.h"
+#include "base/version.h"
 #include "chrome/updater/app/app.h"
+#include "chrome/updater/configurator.h"
+#include "chrome/updater/constants.h"
 #include "chrome/updater/mac/setup/setup.h"
+#include "chrome/updater/persisted_data.h"
+#include "chrome/updater/prefs.h"
+#include "chrome/updater/registration_data.h"
+#include "chrome/updater/updater_version.h"
 
 namespace updater {
 
@@ -17,13 +25,43 @@ namespace {
 class AppInstall : public App {
  private:
   ~AppInstall() override = default;
+  void Initialize() override;
+  void Uninitialize() override;
   void FirstTaskRun() override;
+
+  void SetupDone(int result);
+
+  scoped_refptr<Configurator> config_;
 };
 
+void AppInstall::Initialize() {
+  config_ = base::MakeRefCounted<Configurator>(CreateGlobalPrefs());
+}
+
+void AppInstall::Uninitialize() {
+  PrefsCommitPendingWrites(config_->GetPrefService());
+}
+
 void AppInstall::FirstTaskRun() {
   base::ThreadPool::PostTaskAndReplyWithResult(
       FROM_HERE, {base::MayBlock()}, base::BindOnce(&InstallCandidate),
-      base::BindOnce(&AppInstall::Shutdown, this));
+      base::BindOnce(&AppInstall::SetupDone, this));
+}
+
+void AppInstall::SetupDone(int result) {
+  if (result != 0) {
+    Shutdown(result);
+    return;
+  }
+
+  RegistrationRequest request;
+  request.app_id = kUpdaterAppId;
+  request.version = base::Version(UPDATER_VERSION_STRING);
+
+  base::MakeRefCounted<PersistedData>(config_->GetPrefService())
+      ->RegisterApp(request);
+
+  Shutdown(0);
 }
 
 }  // namespace