[Cronet] Add error code and immediatelyRetryable() to UrlRequestException

components/cronet/android/url_request_error.cc

+// Copyright 2016 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 "components/cronet/android/url_request_error.h"
+
+#include "net/base/net_errors.h"
+
+namespace cronet {
+
+UrlRequestError NetErrorToUrlRequestError(int net_error) {
+  switch (net_error) {
+    case net::ERR_NAME_NOT_RESOLVED:
+      return HOSTNAME_NOT_RESOLVED;
+    case net::ERR_INTERNET_DISCONNECTED:
+      return INTERNET_DISCONNECTED;
+    case net::ERR_NETWORK_CHANGED:
+      return NETWORK_CHANGED;
+    case net::ERR_TIMED_OUT:
+      return TIMED_OUT;
+    case net::ERR_CONNECTION_CLOSED:
+      return CONNECTION_CLOSED;
+    case net::ERR_CONNECTION_TIMED_OUT:
+      return CONNECTION_TIMED_OUT;
+    case net::ERR_CONNECTION_REFUSED:
+      return CONNECTION_REFUSED;
+    case net::ERR_CONNECTION_RESET:
+      return CONNECTION_RESET;
+    case net::ERR_ADDRESS_UNREACHABLE:
+      return ADDRESS_UNREACHABLE;
+    default:
+      return OTHER;
+  }
+}
+
+}  // namespace cronet