Add TaskPriority as a parameter to SequencedWorkerPool in preparation for TaskScheduler experiment.

base/test/sequenced_worker_pool_owner.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 "base/test/sequenced_worker_pool_owner.h"
 
 #include "base/location.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 
 namespace base {
 
 SequencedWorkerPoolOwner::SequencedWorkerPoolOwner(
     size_t max_threads,
     const std::string& thread_name_prefix)
     : constructor_message_loop_(MessageLoop::current()),
-      pool_(new SequencedWorkerPool(max_threads, thread_name_prefix, this)),
+      pool_(new SequencedWorkerPool(max_threads,
+                                    thread_name_prefix,
+                                    TaskPriority::USER_VISIBLE,
+                                    this)),
       has_work_call_count_(0) {}
 
 SequencedWorkerPoolOwner::~SequencedWorkerPoolOwner() {
   pool_->Shutdown();
   pool_ = NULL;
 
   // Spin the current message loop until SWP destruction verified in OnDestruct.
   exit_loop_.Run();
 }
 
@@ skipping 24 matching lines @@
     will_wait_for_shutdown_callback_ = Closure();
   }
 }
 
 void SequencedWorkerPoolOwner::OnDestruct() {
   constructor_message_loop_->task_runner()->PostTask(FROM_HERE,
                                                      exit_loop_.QuitClosure());
 }
 
 }  // namespace base