Ensure tests have an active task runner

chrome/browser/ui/webui/help/version_updater_chromeos_unittest.cc

Index: chrome/browser/ui/webui/help/version_updater_chromeos_unittest.cc
diff --git a/chrome/browser/ui/webui/help/version_updater_chromeos_unittest.cc b/chrome/browser/ui/webui/help/version_updater_chromeos_unittest.cc
index f3994911f270a3a861ec340f7acc3cea6711c940..70a00e4cff96c721d99322de9554655301393add 100644
--- a/chrome/browser/ui/webui/help/version_updater_chromeos_unittest.cc
+++ b/chrome/browser/ui/webui/help/version_updater_chromeos_unittest.cc
@@ -8,7 +8,6 @@
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop/message_loop.h"
 #include "chrome/browser/chromeos/login/users/mock_user_manager.h"
 #include "chrome/browser/chromeos/login/users/scoped_user_manager_enabler.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
@@ -17,6 +16,7 @@
 #include "chromeos/dbus/fake_update_engine_client.h"
 #include "chromeos/dbus/shill_service_client.h"
 #include "chromeos/network/network_handler.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
@@ -67,7 +67,7 @@ class VersionUpdaterCrosTest : public ::testing::Test {
                              "eth",
                              shill::kTypeEthernet, shill::kStateOnline,
                              true /* visible */);
-    loop_.RunUntilIdle();
+    base::MessageLoop::current()->RunUntilIdle();
   }
 
   void TearDown() override {
@@ -77,14 +77,13 @@ class VersionUpdaterCrosTest : public ::testing::Test {
     DeviceSettingsService::Shutdown();
   }
 
+  content::TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<VersionUpdater> version_updater_;
   FakeUpdateEngineClient* fake_update_engine_client_;  // Not owned.
 
   MockUserManager* mock_user_manager_;  // Not owned.
   ScopedUserManagerEnabler user_manager_enabler_;
 
-  base::MessageLoop loop_;
-
   DISALLOW_COPY_AND_ASSIGN(VersionUpdaterCrosTest);
 };