Ensure tests have an active task runner

chrome/browser/extensions/extension_service_test_base.h

 // 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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_TEST_BASE_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_TEST_BASE_H_
 
 #include "base/at_exit.h"
 #include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
@@ skipping 85 matching lines @@
   content::BrowserContext* browser_context();
   Profile* profile();
   ExtensionService* service() { return service_; }
   ExtensionRegistry* registry() { return registry_; }
   const base::FilePath& extensions_install_dir() const {
     return extensions_install_dir_;
   }
   const base::FilePath& data_dir() const { return data_dir_; }
   const base::ScopedTempDir& temp_dir() const { return temp_dir_; }
 
+ private:
+  // Destroying at_exit_manager_ will delete all LazyInstances, so it must come
+  // after thread_bundle_ in the destruction order.
+  base::ShadowingAtExitManager at_exit_manager_;
+  scoped_ptr<content::TestBrowserThreadBundle> thread_bundle_;
+
+ protected:
   // It's unfortunate that these are exposed to subclasses (rather than used
   // through the accessor methods above), but too many tests already use them
   // directly.
 
   // The associated testing profile.
   scoped_ptr<TestingProfile> profile_;
 
   // The ExtensionService, whose lifetime is managed by |profile|'s
   // ExtensionSystem.
   ExtensionService* service_;
   ScopedTestingLocalState testing_local_state_;
 
  private:
   void CreateExtensionService(const ExtensionServiceInitParams& params);
 
   // Destroy temp_dir_ after thread_bundle_ so clean-up tasks can still use the
   // directory.
   base::ScopedTempDir temp_dir_;
 
-  // Destroying at_exit_manager_ will delete all LazyInstances, so it must come
-  // after thread_bundle_ in the destruction order.
-  base::ShadowingAtExitManager at_exit_manager_;
-  scoped_ptr<content::TestBrowserThreadBundle> thread_bundle_;
-
   // Whether or not the thread bundle was reset in the test.
   bool did_reset_thread_bundle_;
 
   // The directory into which extensions are installed.
   base::FilePath extensions_install_dir_;
 
   // chrome/test/data/extensions/
   base::FilePath data_dir_;
 
   content::InProcessUtilityThreadHelper in_process_utility_thread_helper_;
 
   // The associated ExtensionRegistry, for convenience.
   extensions::ExtensionRegistry* registry_;
 
 #if defined OS_CHROMEOS
   chromeos::ScopedTestDeviceSettingsService test_device_settings_service_;
   chromeos::ScopedTestCrosSettings test_cros_settings_;
   chromeos::ScopedTestUserManager test_user_manager_;
 #endif
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_SERVICE_TEST_BASE_H_