Revert of Disallow posting tasks to SequencedWorkerPools by default.

content/public/test/browser_test_base.cc

 // Copyright (c) 2011 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 "content/public/test/browser_test_base.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/stack_trace.h"
 #include "base/feature_list.h"
 #include "base/i18n/icu_util.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/sys_info.h"
 #include "base/test/test_timeouts.h"
-#include "base/threading/sequenced_worker_pool.h"
 #include "build/build_config.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/tracing/tracing_controller_impl.h"
 #include "content/public/app/content_main.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
 #include "content/public/test/test_launcher.h"
 #include "content/public/test/test_utils.h"
 #include "content/test/content_browser_sanity_checker.h"
@@ skipping 128 matching lines @@
 #if defined(OS_POSIX)
   handle_sigterm_ = true;
 #endif
 
   // This is called through base::TestSuite initially. It'll also be called
   // inside BrowserMain, so tell the code to ignore the check that it's being
   // called more than once
   base::i18n::AllowMultipleInitializeCallsForTesting();
 
   embedded_test_server_.reset(new net::EmbeddedTestServer);
-
-  // SequencedWorkerPool is enabled by default in tests (see
-  // base::TestSuite::Initialize). In browser tests, disable it and expect it
-  // to be re-enabled as part of BrowserMainLoop::PreCreateThreads().
-  // TODO(fdoray): Remove this once the SequencedWorkerPool to TaskScheduler
-  // redirection experiment concludes https://crbug.com/622400.
-  base::SequencedWorkerPool::DisableForProcessForTesting();
 }
 
 BrowserTestBase::~BrowserTestBase() {
 #if defined(OS_ANDROID)
   // RemoteTestServer can cause wait on the UI thread.
   base::ThreadRestrictions::ScopedAllowWait allow_wait;
   spawned_test_server_.reset(NULL);
 #endif
 
   CHECK(set_up_called_) << "SetUp was not called. This probably means that the "
@@ skipping 210 matching lines @@
   use_software_compositing_ = true;
 }
 
 bool BrowserTestBase::UsingOSMesa() const {
   base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
   return cmd->GetSwitchValueASCII(switches::kUseGL) ==
          gl::kGLImplementationOSMesaName;
 }
 
 }  // namespace content