Remove sandbox on Windows.

sandbox/win/src/win2k_threadpool.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 "sandbox/win/src/win2k_threadpool.h"
-
-#include <stddef.h>
-
-#include "sandbox/win/src/win_utils.h"
-
-namespace sandbox {
-
-Win2kThreadPool::Win2kThreadPool() {
-  ::InitializeCriticalSection(&lock_);
-}
-
-bool Win2kThreadPool::RegisterWait(const void* cookie, HANDLE waitable_object,
-                                   CrossCallIPCCallback callback,
-                                   void* context) {
-  if (0 == cookie) {
-    return false;
-  }
-  HANDLE pool_object = NULL;
-  // create a wait for a kernel object, with no timeout
-  if (!::RegisterWaitForSingleObject(&pool_object, waitable_object, callback,
-                                     context, INFINITE, WT_EXECUTEDEFAULT)) {
-    return false;
-  }
-  PoolObject pool_obj = {cookie, pool_object};
-  AutoLock lock(&lock_);
-  pool_objects_.push_back(pool_obj);
-  return true;
-}
-
-bool Win2kThreadPool::UnRegisterWaits(void* cookie) {
-  if (0 == cookie) {
-    return false;
-  }
-  AutoLock lock(&lock_);
-  bool success = true;
-  PoolObjects::iterator it = pool_objects_.begin();
-  while (it != pool_objects_.end()) {
-    if (it->cookie == cookie) {
-      HANDLE wait = it->wait;
-      it = pool_objects_.erase(it);
-      success &= (::UnregisterWaitEx(wait, INVALID_HANDLE_VALUE) != 0);
-    } else {
-      ++it;
-    }
-  }
-  return success;
-}
-
-size_t Win2kThreadPool::OutstandingWaits() {
-  AutoLock lock(&lock_);
-  return pool_objects_.size();
-}
-
-Win2kThreadPool::~Win2kThreadPool() {
-  // Here we used to unregister all the pool wait handles. Now, following the
-  // rest of the code we avoid lengthy or blocking calls given that the process
-  // is being torn down.
-  ::DeleteCriticalSection(&lock_);
-}
-
-}  // namespace sandbox