Remove redundant mapping of net errors to strings.

chrome/browser/resources/net_internals/main.js

 // 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.
 
 /**
  * Dictionary of constants (Initialized soon after loading by data from browser,
  * updated on load log).  The *Types dictionaries map strings to numeric IDs,
  * while the *TypeNames are the other way around.
  */
 var EventType = null;
@@ skipping 330 matching lines @@
 
 /**
  * Returns the name for netError.
  *
  * Example: netErrorToString(-105) should return
  * "ERR_NAME_NOT_RESOLVED".
  * @param {number} netError The net error code.
  * @return {string} The name of the given error.
  */
 function netErrorToString(netError) {
-  var str = getKeyWithValue(NetError, netError);
-  if (str == '?')
-    return str;
-  return 'ERR_' + str;
+  return getKeyWithValue(NetError, netError);
 }
 
 /**
  * Returns the name for quicError.
  *
  * Example: quicErrorToString(25) should return
  * "TIMED_OUT".
  * @param {number} quicError The QUIC error code.
  * @return {string} The name of the given error.
  */
@@ skipping 17 matching lines @@
  * Returns a string representation of |family|.
  * @param {number} family An AddressFamily
  * @return {string} A representation of the given family.
  */
 function addressFamilyToString(family) {
   var str = getKeyWithValue(AddressFamily, family);
   // All the address family start with ADDRESS_FAMILY_*.
   // Strip that prefix since it is redundant and only clutters the output.
   return str.replace(/^ADDRESS_FAMILY_/, '');
 }