Move base to DEPS

base/test/test_file_util_mac.cc

-// Copyright (c) 2011 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/test_file_util.h"
-
-#include <sys/mman.h>
-#include <errno.h>
-
-#include "base/files/file_util.h"
-#include "base/files/memory_mapped_file.h"
-#include "base/logging.h"
-
-namespace base {
-
-bool EvictFileFromSystemCache(const FilePath& file) {
-  // There aren't any really direct ways to purge a file from the UBC.  From
-  // talking with Amit Singh, the safest is to mmap the file with MAP_FILE (the
-  // default) + MAP_SHARED, then do an msync to invalidate the memory.  The next
-  // open should then have to load the file from disk.
-
-  int64 length;
-  if (!GetFileSize(file, &length)) {
-    DLOG(ERROR) << "failed to get size of " << file.value();
-    return false;
-  }
-
-  // When a file is empty, we do not need to evict it from cache.
-  // In fact, an attempt to map it to memory will result in error.
-  if (length == 0) {
-    DLOG(WARNING) << "file size is zero, will not attempt to map to memory";
-    return true;
-  }
-
-  MemoryMappedFile mapped_file;
-  if (!mapped_file.Initialize(file)) {
-    DLOG(WARNING) << "failed to memory map " << file.value();
-    return false;
-  }
-
-  if (msync(const_cast<uint8*>(mapped_file.data()), mapped_file.length(),
-            MS_INVALIDATE) != 0) {
-    DLOG(WARNING) << "failed to invalidate memory map of " << file.value()
-                  << ", errno: " << errno;
-    return false;
-  }
-
-  return true;
-}
-
-}  // namespace base