Ensure tests have an active task runner

chrome/browser/autocomplete/shortcuts_backend_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_backend.h"
 
 #include "base/files/scoped_temp_dir.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 36 matching lines @@
       changed_notified_ = changed_notified;
   }
 
   void InitBackend();
   bool AddShortcut(const ShortcutsDatabase::Shortcut& shortcut);
   bool UpdateShortcut(const ShortcutsDatabase::Shortcut& shortcut);
   bool DeleteShortcutsWithURL(const GURL& url);
   bool DeleteShortcutsWithIDs(
       const ShortcutsDatabase::ShortcutIDs& deleted_ids);
 
+ private:
+  base::MessageLoopForUI ui_message_loop_;
+  content::TestBrowserThread ui_thread_;
+  content::TestBrowserThread db_thread_;
+
  protected:
   TestingProfile profile_;
 
  private:
   scoped_refptr<ShortcutsBackend> backend_;
-  base::MessageLoopForUI ui_message_loop_;
-  content::TestBrowserThread ui_thread_;
-  content::TestBrowserThread db_thread_;
 
   bool load_notified_;
   bool changed_notified_;
 
   DISALLOW_COPY_AND_ASSIGN(ShortcutsBackendTest);
 };
 
 ShortcutsBackendTest::ShortcutsBackendTest()
     : ui_thread_(content::BrowserThread::UI, &ui_message_loop_),
       db_thread_(content::BrowserThread::DB),
@@ skipping 232 matching lines @@
   ASSERT_TRUE(shortcut4_iter != shortcuts_map().end());
   EXPECT_EQ(shortcut4.id, shortcut4_iter->second.id);
 
   ShortcutsDatabase::ShortcutIDs deleted_ids;
   deleted_ids.push_back(shortcut3.id);
   deleted_ids.push_back(shortcut4.id);
   EXPECT_TRUE(DeleteShortcutsWithIDs(deleted_ids));
 
   ASSERT_EQ(0U, shortcuts_map().size());
 }