arc: Use GET_INTERFACE_FOR_METHOD macro

chrome/browser/sync/test/integration/sync_arc_package_helper.cc

 // Copyright 2016 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.
 
 #include "chrome/browser/sync/test/integration/sync_arc_package_helper.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/memory/ptr_util.h"
@@ skipping 165 matching lines @@
   // OnPackageListRefreshed will be called.
   instance_map_[profile]->SendRefreshPackageList(
       std::vector<arc::mojom::ArcPackageInfo>());
 }
 
 void SyncArcPackageHelper::InstallPackage(
     Profile* profile,
     const mojom::ArcPackageInfo& package) {
   ArcAppListPrefs* arc_app_list_prefs = ArcAppListPrefs::Get(profile);
   DCHECK(arc_app_list_prefs);
-  FakeAppInstance* fake_app_instance = static_cast<FakeAppInstance*>(
-      arc_app_list_prefs->app_instance_holder()->GetInstanceForMethod(
-          "InstallPackage"));
+  mojom::AppInstance* app_instance = ARC_GET_INSTANCE_FOR_METHOD(
+      arc_app_list_prefs->app_instance_holder(), InstallPackage);
 
-  DCHECK(fake_app_instance);
+  DCHECK(app_instance);
   // After this function, new package should be added to local sync service
   // and install event should be sent to sync server.
-  fake_app_instance->InstallPackage(package.Clone());
+  app_instance->InstallPackage(package.Clone());
 }
 
 void SyncArcPackageHelper::UninstallPackage(Profile* profile,
                                             const std::string& package_name) {
   ArcAppListPrefs* arc_app_list_prefs = ArcAppListPrefs::Get(profile);
   DCHECK(arc_app_list_prefs);
-  FakeAppInstance* fake_app_instance = static_cast<FakeAppInstance*>(
-      arc_app_list_prefs->app_instance_holder()->GetInstanceForMethod(
-          "UninstallPackage"));
-  DCHECK(fake_app_instance);
+  mojom::AppInstance* app_instance = ARC_GET_INSTANCE_FOR_METHOD(
+      arc_app_list_prefs->app_instance_holder(), UninstallPackage);
+  DCHECK(app_instance);
   // After this function, package should be removed from local sync service
   // and uninstall event should be sent to sync server.
-  fake_app_instance->UninstallPackage(package_name);
+  app_instance->UninstallPackage(package_name);
 }
 
 // Packages from local pref are used for these test functions. Packages in local
 // pref should be indentical to syncservice after syncservice is launched.
 // Packagd update behavior is not synced by design.
 bool SyncArcPackageHelper::ArcPackagesMatch(Profile* profile1,
                                             Profile* profile2) {
   const ArcAppListPrefs* prefs1 = ArcAppListPrefs::Get(profile1);
   const ArcAppListPrefs* prefs2 = ArcAppListPrefs::Get(profile2);
   DCHECK(prefs1);
@@ skipping 33 matching lines @@
     if (package1_info->last_backup_android_id !=
         package2_info->last_backup_android_id)
       return false;
     if (package1_info->last_backup_time != package2_info->last_backup_time)
       return false;
   }
   return true;
 }
 
 }  // namespace arc