Ensure tests have an active task runner

chrome/browser/chromeos/profiles/profile_list_chromeos_unittest.cc

 // Copyright 2013 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 <string>
 
 #include "ash/ash_switches.h"
 #include "base/command_line.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.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/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/prefs/pref_service_syncable.h"
 #include "chrome/browser/profiles/avatar_menu.h"
 #include "chrome/browser/profiles/avatar_menu_observer.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/ui/ash/chrome_shell_delegate.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_switches.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"
 
 using base::ASCIIToUTF16;
 
 namespace {
 
 class MockObserver : public AvatarMenuObserver {
  public:
   MockObserver() : count_(0) {}
   ~MockObserver() override {}
@@ skipping 65 matching lines @@
   void ActiveUserChanged(const base::string16& name) {
     std::string email_string = base::UTF16ToASCII(name) + "@example.com";
     GetFakeChromeUserManager()->SwitchActiveUser(email_string);
   }
 
   TestingProfileManager* manager() { return &manager_; }
 
   int change_count() const { return mock_observer_->change_count(); }
 
  private:
+  content::TestBrowserThreadBundle thread_bundle_;
   TestingProfileManager manager_;
   scoped_ptr<MockObserver> mock_observer_;
   scoped_ptr<ScopedUserManagerEnabler> user_manager_enabler_;
   scoped_ptr<AvatarMenu> avatar_menu_;
   ChromeShellDelegate chrome_shell_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileListChromeOSTest);
 };
 
 TEST_F(ProfileListChromeOSTest, InitialCreation) {
@@ skipping 177 matching lines @@
 
   // Should only show avatar menu with multiple users.
   EXPECT_FALSE(AvatarMenu::ShouldShowAvatarMenu());
 
   AddProfile(name2, false);
 
   EXPECT_FALSE(AvatarMenu::ShouldShowAvatarMenu());
 }
 
 }  // namespace chromeos