Ensure tests have an active task runner

chrome/browser/ui/android/tab_model/tab_model_unittest.cc

 // Copyright (c) 2012 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/android/tab_android.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/ui/android/tab_model/tab_model.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-typedef testing::Test TabModelTest;
+class TabModelTest : public testing::Test {
+  content::TestBrowserThreadBundle thread_bundle_;
+};
 
 namespace {
 class TabModelAndroidProfileMock : public TestingProfile {
  public:
   TabModelAndroidProfileMock() {}
   virtual ~TabModelAndroidProfileMock() {}
 
   MOCK_METHOD0(GetOffTheRecordProfile, Profile*());
   MOCK_METHOD0(HasOffTheRecordProfile, bool());
 };
@@ skipping 50 matching lines @@
   EXPECT_EQ(&testing_profile, tab_model.GetProfile());
   EXPECT_TRUE(tab_model.IsOffTheRecord());
 
   // Notify profile is being destroyed and verify pointer is cleared.
   content::NotificationService::current()->Notify(
     chrome::NOTIFICATION_PROFILE_DESTROYED,
     content::Source<Profile>(&testing_profile),
     content::NotificationService::NoDetails());
   EXPECT_EQ(NULL, tab_model.GetProfile());
 }