Revert 271459 "Remove stray platform_file.h from webkit"

trunk/src/webkit/browser/blob/local_file_stream_reader.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 "webkit/browser/blob/local_file_stream_reader.h"
 
 #include "base/file_util.h"
 #include "base/files/file_util_proxy.h"
 #include "base/location.h"
 #include "base/logging.h"
+#include "base/platform_file.h"
 #include "base/task_runner.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 
 namespace webkit_blob {
 
 namespace {
 
-const int kOpenFlagsForRead = base::File::FLAG_OPEN |
-                              base::File::FLAG_READ |
-                              base::File::FLAG_ASYNC;
+const int kOpenFlagsForRead = base::PLATFORM_FILE_OPEN |
+                              base::PLATFORM_FILE_READ |
+                              base::PLATFORM_FILE_ASYNC;
 
 }  // namespace
 
 FileStreamReader* FileStreamReader::CreateForLocalFile(
     base::TaskRunner* task_runner,
     const base::FilePath& file_path,
     int64 initial_offset,
     const base::Time& expected_modification_time) {
   return new LocalFileStreamReader(task_runner, file_path, initial_offset,
                                    expected_modification_time);
@@ skipping 127 matching lines @@
     return;
   }
   if (!VerifySnapshotTime(expected_modification_time_, file_info)) {
     callback.Run(net::ERR_UPLOAD_FILE_CHANGED);
     return;
   }
   callback.Run(file_info.size);
 }
 
 }  // namespace webkit_blob