[APS] Call into the server connector on first login.

On first login, make a call into the AppPreloadServerConnector's
StartAppInstallationForFirstLogin method. Pass in a callback that will
handle the response and set the appropriate pref once done.

Bug: b/246674182
Change-Id: I119147a2664925b6dd6a78393f223f775309ae50
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3895491
Auto-Submit: Jeevan Shikaram <jshikaram@chromium.org>
Reviewed-by: Melissa Zhang <melzhang@chromium.org>
Commit-Queue: Jeevan Shikaram <jshikaram@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1047331}

chrome/browser/apps/app_preload_service/app_preload_service.cc

@@ -6,8 +6,10 @@
 
 #include <memory>
 
+#include "base/bind.h"
 #include "base/logging.h"
 #include "chrome/browser/apps/app_preload_service/app_preload_service_factory.h"
+#include "chrome/browser/apps/app_preload_service/device_info_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/prefs/pref_service.h"
@@ -62,6 +64,13 @@ void AppPreloadService::RegisterProfilePrefs(
 }
 
 void AppPreloadService::StartAppInstallationForFirstLogin() {
+  server_connector_->GetAppsForFirstLogin(
+      DeviceInfoManager(profile_),
+      base::BindOnce(&AppPreloadService::OnGetAppsForFirstLoginCompleted,
+                     weak_ptr_factory_.GetWeakPtr()));
+}
+
+void AppPreloadService::OnGetAppsForFirstLoginCompleted() {
   DictionaryPrefUpdate(profile_->GetPrefs(), prefs::kApsStateManager)
       ->GetDict()
       .Set(kFirstLoginFlowCompletedKey, true);

chrome/browser/apps/app_preload_service/app_preload_service.h

@@ -9,6 +9,7 @@
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/raw_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/apps/app_preload_service/app_preload_server_connector.h"
 #include "components/keyed_service/core/keyed_service.h"
@@ -43,10 +44,16 @@ class AppPreloadService : public KeyedService {
   friend class AppPreloadServiceTest;
   FRIEND_TEST_ALL_PREFIXES(AppPreloadServiceTest, FirstLoginPrefSet);
 
+  // Processes the list of apps retrieved by the server connector.
+  void OnGetAppsForFirstLoginCompleted();
+
   const base::Value::Dict& GetStateManager() const;
 
   raw_ptr<Profile> profile_;
   std::unique_ptr<AppPreloadServerConnector> server_connector_;
+
+  // |weak_ptr_factory_| must be the last member of this class.
+  base::WeakPtrFactory<AppPreloadService> weak_ptr_factory_{this};
 };
 
 }  // namespace apps