net: Update FileStream to use base::File instead of PlatformFile.

net/url_request/url_request_file_job.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.
 
 // For loading files, we make use of overlapped i/o to ensure that reading from
 // the filesystem (e.g., a network filesystem) does not block the calling
 // thread.  An alternative approach would be to use a background thread or pool
 // of threads, but it seems better to leverage the operating system's ability
 // to do background file reads for us.
 //
@@ skipping 211 matching lines @@
   // FileDirJob where it is resolved as invalid.
   if (!meta_info_.file_exists) {
     DidOpen(ERR_FILE_NOT_FOUND);
     return;
   }
   if (meta_info_.is_directory) {
     DidOpen(OK);
     return;
   }
 
-  int flags = base::PLATFORM_FILE_OPEN |
-              base::PLATFORM_FILE_READ |
-              base::PLATFORM_FILE_ASYNC;
+  int flags = base::File::FLAG_OPEN |
+              base::File::FLAG_READ |
+              base::File::FLAG_ASYNC;
   int rv = stream_->Open(file_path_, flags,
                          base::Bind(&URLRequestFileJob::DidOpen,
                                     weak_ptr_factory_.GetWeakPtr()));
   if (rv != ERR_IO_PENDING)
     DidOpen(rv);
 }
 
 void URLRequestFileJob::DidOpen(int result) {
   if (result != OK) {
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result));
@@ skipping 47 matching lines @@
     NotifyDone(URLRequestStatus(URLRequestStatus::FAILED, result));
   }
 
   remaining_bytes_ -= result;
   DCHECK_GE(remaining_bytes_, 0);
 
   NotifyReadComplete(result);
 }
 
 }  // namespace net