Forcibly clear worker ref counts on shutdown.

chrome/browser/chromeos/status/data_promo_notification_unittest.cc

 // Copyright (c) 2015 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/chromeos/status/data_promo_notification.h"
 
 #include "base/command_line.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "chrome/browser/chromeos/login/users/fake_chrome_user_manager.h"
 #include "chrome/browser/chromeos/login/users/scoped_user_manager_enabler.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile_manager.h"
 #include "chromeos/chromeos_switches.h"
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/shill_device_client.h"
 #include "chromeos/dbus/shill_service_client.h"
 #include "chromeos/login/login_state.h"
 #include "chromeos/network/network_state_handler.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/platform_test.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 #include "ui/chromeos/network/network_connect.h"
 #include "ui/message_center/message_center.h"
 
 namespace {
 
 const char kCellularDevicePath[] = "/device/stub_cellular_device1";
 const char kCellularServicePath[] = "/service/cellular1";
 const char kNotificationId[] = "chrome://settings/internet/data_saver";
@@ skipping 98 matching lines @@
                              "cellular1" /* name */, shill::kTypeCellular,
                              "activated", true /* visible */);
     service_test->SetServiceProperty(
         kCellularServicePath, shill::kActivationStateProperty,
         base::StringValue(shill::kActivationStateActivated));
     service_test->SetServiceProperty(kCellularServicePath,
                                      shill::kConnectableProperty,
                                      base::FundamentalValue(true));
   }
 
+  content::TestBrowserThreadBundle thread_bundle_;
   std::unique_ptr<DataPromoNotification> data_promo_notification_;
   std::unique_ptr<NetworkConnectTestDelegate> network_connect_delegate_;
   std::unique_ptr<ScopedUserManagerEnabler> user_manager_enabler_;
   std::unique_ptr<TestingProfileManager> profile_manager_;
-  base::MessageLoop message_loop_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(DataPromoNotificationTest);
 };
 
 TEST_F(DataPromoNotificationTest, DataSaverNotification) {
   message_center::MessageCenter* message_center =
       message_center::MessageCenter::Get();
 
   // Network setup shouldn't be enough to activate notification.
   EXPECT_FALSE(message_center->FindVisibleNotificationById(kNotificationId));
 
   ui::NetworkConnect::Get()->ConnectToNetwork(kCellularServicePath);
   base::RunLoop().RunUntilIdle();
   // Connecting to cellular network (which here makes it the default network)
   // should trigger the Data Saver notification.
   EXPECT_TRUE(message_center->FindVisibleNotificationById(kNotificationId));
 }
 
 }  // namespace test
 }  // namespace chromeos