Ensure tests have an active task runner

chrome/browser/chromeos/policy/consumer_enrollment_handler_factory_unittest.cc

Index: chrome/browser/chromeos/policy/consumer_enrollment_handler_factory_unittest.cc
diff --git a/chrome/browser/chromeos/policy/consumer_enrollment_handler_factory_unittest.cc b/chrome/browser/chromeos/policy/consumer_enrollment_handler_factory_unittest.cc
index 8e56c1973d8057b117b6fd8b9002ec3e20b50583..b1c209d798332437f69d598d32c98c54afb79cf6 100644
--- a/chrome/browser/chromeos/policy/consumer_enrollment_handler_factory_unittest.cc
+++ b/chrome/browser/chromeos/policy/consumer_enrollment_handler_factory_unittest.cc
@@ -14,6 +14,7 @@
 #include "chrome/browser/chromeos/policy/fake_consumer_management_service.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile_manager.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ -52,6 +53,7 @@ class ConsumerEnrollmentHandlerFactoryTest : public testing::Test {
     ASSERT_TRUE(testing_profile_manager_->SetUp());
   }
 
+  content::TestBrowserThreadBundle thread_bundle_;
   FakeConsumerManagementService* fake_service_;
   chromeos::FakeChromeUserManager* fake_user_manager_;
   chromeos::ScopedUserManagerEnabler scoped_user_manager_enabler_;