Get a descriptive error name from ICU

url/url_canon_icu.cc

 // Copyright 2013 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.
 
 // ICU integration functions.
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "third_party/icu/source/common/unicode/ucnv.h"
 #include "third_party/icu/source/common/unicode/ucnv_cb.h"
 #include "third_party/icu/source/common/unicode/uidna.h"
+#include "third_party/icu/source/common/unicode/utypes.h"
 #include "url/url_canon_icu.h"
 #include "url/url_canon_internal.h"  // for _itoa_s
 
 namespace url {
 
 namespace {
 
 // Called when converting a character that can not be represented, this will
 // append an escaped version of the numerical character reference for that code
 // point. It is of the form "&#1234;" and we will escape the non-digits to
@@ skipping 68 matching lines @@
 // http://goo.gl/3XBhqw ).
 // See http://http://unicode.org/reports/tr46/ and references therein
 // for more details.
 struct UIDNAWrapper {
   UIDNAWrapper() {
     UErrorCode err = U_ZERO_ERROR;
     // TODO(jungshik): Change options as different parties (browsers,
     // registrars, search engines) converge toward a consensus.
     value = uidna_openUTS46(UIDNA_CHECK_BIDI, &err);
     if (U_FAILURE(err)) {
-      CHECK(false) << "failed to open UTS46 data with error: " << err;
+      CHECK(false) << "failed to open UTS46 data with error: "
+                   << u_errorName(err);
       value = NULL;
     }
   }
 
   UIDNA* value;
 };
 
 }  // namespace
 
 ICUCharsetConverter::ICUCharsetConverter(UConverter* converter)
@@ skipping 66 matching lines @@
     // if necessary.
     if (err != U_BUFFER_OVERFLOW_ERROR || info.errors != 0)
       return false;  // Unknown error, give up.
 
     // Not enough room in our buffer, expand.
     output->Resize(output_length);
   }
 }
 
 }  // namespace url