Instantiate ScopedTaskEnvironment in net unittests.

net/base/directory_lister_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 <list>
 #include <utility>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/i18n/file_util_icu.h"
-#include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/stringprintf.h"
-#include "base/test/scoped_task_scheduler.h"
 #include "net/base/directory_lister.h"
 #include "net/base/net_errors.h"
 #include "net/test/gtest_util.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 using net::test::IsError;
 using net::test::IsOk;
 
@@ skipping 100 matching lines @@
 
   std::vector<base::FileEnumerator::FileInfo> file_list_;
   std::vector<base::FilePath> paths_;
 };
 
 }  // namespace
 
 class DirectoryListerTest : public PlatformTest {
  public:
   DirectoryListerTest()
-      : scoped_task_scheduler_(base::MessageLoop::current()),
-        total_created_file_system_objects_in_temp_root_dir_(0),
+      : total_created_file_system_objects_in_temp_root_dir_(0),
         created_file_system_objects_in_temp_root_dir_(0) {}
 
   void SetUp() override {
     // Randomly create a directory structure of depth 3 in a temporary root
     // directory.
     std::list<std::pair<base::FilePath, int> > directories;
     ASSERT_TRUE(temp_root_dir_.CreateUniqueTempDir());
     directories.push_back(std::make_pair(temp_root_dir_.GetPath(), 0));
     while (!directories.empty()) {
       std::pair<base::FilePath, int> dir_data = directories.front();
@@ skipping 30 matching lines @@
     // include "..".
     return total_created_file_system_objects_in_temp_root_dir_;
   }
 
   int expected_list_length_non_recursive() const {
     // List should include everything in the top level directory, and "..".
     return created_file_system_objects_in_temp_root_dir_ + 1;
   }
 
  private:
-  base::test::ScopedTaskScheduler scoped_task_scheduler_;
-
   // Number of files and directories created in SetUp, excluding
   // |temp_root_dir_| itself.  Includes all nested directories and their files.
   int total_created_file_system_objects_in_temp_root_dir_;
   // Number of files and directories created directly in |temp_root_dir_|.
   int created_file_system_objects_in_temp_root_dir_;
 
   base::ScopedTempDir temp_root_dir_;
 };
 
 TEST_F(DirectoryListerTest, BigDirTest) {
@@ skipping 90 matching lines @@
   ListerDelegate delegate(DirectoryLister::ALPHA_DIRS_FIRST);
   DirectoryLister lister(
       tempDir.GetPath().AppendASCII("this_path_does_not_exist"), &delegate);
   delegate.Run(&lister);
 
   EXPECT_THAT(delegate.error(), IsError(ERR_FILE_NOT_FOUND));
   EXPECT_EQ(0, delegate.num_files());
 }
 
 }  // namespace net