extensions: Abstract out install delay strategy

chrome/browser/extensions/extension_service_test_base.cc

 // 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.
 
 #include "chrome/browser/extensions/extension_service_test_base.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/stringprintf.h"
 #include "base/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_error_reporter.h"
 #include "chrome/browser/extensions/extension_garbage_collector_factory.h"
 #include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/shared_module_service.h"
 #include "chrome/browser/extensions/test_extension_system.h"
 #include "chrome/browser/extensions/updater/extension_updater.h"
 #include "chrome/browser/prefs/browser_prefs.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/syncable_prefs/pref_service_mock_factory.h"
 #include "components/syncable_prefs/pref_service_syncable.h"
@@ skipping 280 matching lines @@
 
   service_ =
       system->CreateExtensionService(base::CommandLine::ForCurrentProcess(),
                                      params.extensions_install_dir,
                                      params.autoupdate_enabled);
 
   service_->SetFileTaskRunnerForTesting(
       base::ThreadTaskRunnerHandle::Get().get());
   service_->set_extensions_enabled(true);
   service_->set_show_extensions_prompts(false);
-  service_->set_install_updates_when_idle_for_test(false);
   service_->component_loader()->set_ignore_whitelist_for_testing(true);
 
   // When we start up, we want to make sure there is no external provider,
   // since the ExtensionService on Windows will use the Registry as a default
   // provider and if there is something already registered there then it will
   // interfere with the tests. Those tests that need an external provider
   // will register one specifically.
   service_->ClearProvidersForTesting();
 
+  service_->RegisterInstallGate(ExtensionPrefs::DELAY_REASON_WAIT_FOR_IMPORTS,
+                                service_->shared_module_service());
+
 #if defined(OS_CHROMEOS)
   InstallLimiter::Get(profile_.get())->DisableForTest();
 #endif
 }
 
 }  // namespace extensions