Move base to DEPS

base/threading/platform_thread_internal_posix.cc

-// Copyright 2015 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/platform_thread_internal_posix.h"
-
-#include "base/logging.h"
-
-namespace base {
-
-namespace internal {
-
-int ThreadPriorityToNiceValue(ThreadPriority priority) {
-  for (const ThreadPriorityToNiceValuePair& pair :
-       kThreadPriorityToNiceValueMap) {
-    if (pair.priority == priority)
-      return pair.nice_value;
-  }
-  NOTREACHED() << "Unknown ThreadPriority";
-  return 0;
-}
-
-ThreadPriority NiceValueToThreadPriority(int nice_value) {
-  for (const ThreadPriorityToNiceValuePair& pair :
-       kThreadPriorityToNiceValueMap) {
-    if (pair.nice_value == nice_value)
-      return pair.priority;
-  }
-  NOTREACHED() << "Unknown nice value";
-  return ThreadPriority::NORMAL;
-}
-
-}  // namespace internal
-
-}  // namespace base