Move base to DEPS

base/third_party/dmg_fp/dtoa_wrapper.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.
-//
-// The purpose of this file is to supply the macro definintions necessary
-// to make third_party/dmg_fp/dtoa.cc threadsafe.
-#include "base/lazy_instance.h"
-#include "base/logging.h"
-#include "base/synchronization/lock.h"
-
-// We need two locks because they're sometimes grabbed at the same time.
-// A single lock would lead to an attempted recursive grab.
-static base::LazyInstance<base::Lock>::Leaky
-    dtoa_lock_0 = LAZY_INSTANCE_INITIALIZER;
-static base::LazyInstance<base::Lock>::Leaky
-    dtoa_lock_1 = LAZY_INSTANCE_INITIALIZER;
-
-/*
- * This define and the code below is to trigger thread-safe behavior
- * in dtoa.cc, per this comment from the file:
- *
- * #define MULTIPLE_THREADS if the system offers preemptively scheduled
- *      multiple threads.  In this case, you must provide (or suitably
- *      #define) two locks, acquired by ACQUIRE_DTOA_LOCK(n) and freed
- *      by FREE_DTOA_LOCK(n) for n = 0 or 1.  (The second lock, accessed
- *      in pow5mult, ensures lazy evaluation of only one copy of high
- *      powers of 5; omitting this lock would introduce a small
- *      probability of wasting memory, but would otherwise be harmless.)
- *      You must also invoke freedtoa(s) to free the value s returned by
- *      dtoa.  You may do so whether or not MULTIPLE_THREADS is #defined.
- */
-#define MULTIPLE_THREADS
-
-inline static void ACQUIRE_DTOA_LOCK(size_t n) {
-  DCHECK(n < 2);
-  base::Lock* lock = n == 0 ? dtoa_lock_0.Pointer() : dtoa_lock_1.Pointer();
-  lock->Acquire();
-}
-
-inline static void FREE_DTOA_LOCK(size_t n) {
-  DCHECK(n < 2);
-  base::Lock* lock = n == 0 ? dtoa_lock_0.Pointer() : dtoa_lock_1.Pointer();
-  lock->Release();
-}
-
-#include "base/third_party/dmg_fp/dtoa.cc"