Ensure tests have an active task runner

chrome/browser/autocomplete/shortcuts_database_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/autocomplete/shortcuts_database.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/format_macros.h"
 #include "base/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/base/testing_profile.h"
 #include "components/omnibox/autocomplete_match_type.h"
+#include "content/public/test/test_browser_thread_bundle.h"
 #include "sql/statement.h"
 #include "sql/test/test_helpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/page_transition_types.h"
 
 using base::ASCIIToUTF16;
 
 // Helpers --------------------------------------------------------------------
 
 namespace {
@@ skipping 53 matching lines @@
   void TearDown() override;
 
   void ClearDB();
   size_t CountRecords() const;
 
   ShortcutsDatabase::Shortcut ShortcutFromTestInfo(
       const ShortcutsDatabaseTestInfo& info);
 
   void AddAll();
 
+  content::TestBrowserThreadBundle thread_bundle_;
   scoped_ptr<TestingProfile> profile_;
   scoped_refptr<ShortcutsDatabase> db_;
 };
 
 void ShortcutsDatabaseTest::SetUp() {
   profile_.reset(new TestingProfile());
   db_ = new ShortcutsDatabase(
       profile_->GetPath().Append(chrome::kShortcutsDatabaseName));
   ASSERT_TRUE(db_->Init());
   ClearDB();
@@ skipping 190 matching lines @@
   sql::Statement statement(connection.GetUniqueStatement(
       "SELECT count(1) FROM omni_box_shortcuts WHERE type in (9, 10, 11, 12)"));
   ASSERT_TRUE(statement.is_valid());
   while (statement.Step())
     EXPECT_EQ(0, statement.ColumnInt(0));
   EXPECT_TRUE(statement.Succeeded());
 #if !defined(OS_WIN)
   EXPECT_TRUE(temp_dir.Delete());
 #endif
 }