Move some misc thread-related stuff from base to base/thread and into the bas...

base/threading/worker_pool_win.cc

+// Copyright (c) 2010 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/threading/worker_pool.h"
+
+#include "base/logging.h"
+#include "base/task.h"
+
+namespace base {
+
+namespace {
+
+DWORD CALLBACK WorkItemCallback(void* param) {
+  Task* task = static_cast<Task*>(param);
+  task->Run();
+  delete task;
+  return 0;
+}
+
+}  // namespace
+
+bool WorkerPool::PostTask(const tracked_objects::Location& from_here,
+                          Task* task, bool task_is_slow) {
+  task->SetBirthPlace(from_here);
+
+  ULONG flags = 0;
+  if (task_is_slow)
+    flags |= WT_EXECUTELONGFUNCTION;
+
+  if (!QueueUserWorkItem(WorkItemCallback, task, flags)) {
+    DLOG(ERROR) << "QueueUserWorkItem failed: " << GetLastError();
+    delete task;
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace base