2 files changed, 21 insertions, 2 deletions
diff --git a/net/base/net_errors.cc b/net/base/net_errors.cc
index 623c071..8ac6b89 100644
--- a/net/base/net_errors.cc
+++ b/net/base/net_errors.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -44,4 +44,18 @@ std::vector<int> GetAllErrorCodesForUma() {
       kAllErrorCodes, arraysize(kAllErrorCodes));
 }
 
+Error PlatformFileErrorToNetError(
+    base::PlatformFileError file_error) {
+  switch (file_error) {
+    case base::PLATFORM_FILE_OK:
+      return net::OK;
+    case base::PLATFORM_FILE_ERROR_NOT_FOUND:
+      return net::ERR_FILE_NOT_FOUND;
+    case base::PLATFORM_FILE_ERROR_ACCESS_DENIED:
+      return net::ERR_ACCESS_DENIED;
+    default:
+      return net::ERR_FAILED;
+  }
+}
+
 }  // namespace net
diff --git a/net/base/net_errors.h b/net/base/net_errors.h
index 12344e7..6c30775 100644
--- a/net/base/net_errors.h
+++ b/net/base/net_errors.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -8,6 +8,7 @@
 #include <vector>
 
 #include "base/basictypes.h"
+#include "base/platform_file.h"
 #include "net/base/net_export.h"
 
 namespace net {
@@ -50,6 +51,10 @@ NET_EXPORT Error MapSystemError(int os_error);
 // error code that is not followed immediately by a valid error code.
 std::vector<int> GetAllErrorCodesForUma();
 
+// A convenient function to translate platform file error to net error code.
+NET_EXPORT Error PlatformFileErrorToNetError(
+    base::PlatformFileError file_error);
+
 }  // namespace net
 
 #endif  // NET_BASE_NET_ERRORS_H__