Add Diagnose Errors button to navigation error page

chrome/common/localized_error.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.
 
 #include "chrome/common/localized_error.h"
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 526 matching lines @@
   summary->SetString("failedUrl", failed_url_string);
   summary->SetString("hostName", failed_url.host());
   summary->SetString("productName",
                      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 
   error_strings->SetString(
       "more", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_MORE));
   error_strings->SetString(
       "less", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_LESS));
   error_strings->Set("summary", summary);
+  error_strings->SetString(
+      "diagnose", l10n_util::GetStringUTF16(IDS_ERRORPAGES_BUTTON_DIAGNOSE));
 
   if (options.details_resource_id != kErrorPagesNoDetails) {
     error_strings->SetString(
         "errorDetails", l10n_util::GetStringUTF16(options.details_resource_id));
   }
 
   string16 error_string;
   if (error_domain == net::kErrorDomain) {
     // Non-internationalized error string, for debugging Chrome itself.
     std::string ascii_error_string = net::ErrorToString(error_code);
@@ skipping 244 matching lines @@
 #if defined(OS_CHROMEOS)
   GURL learn_more_url(kAppWarningLearnMoreUrl);
   base::DictionaryValue* suggest_learn_more = new base::DictionaryValue();
   suggest_learn_more->SetString("msg",
                                 l10n_util::GetStringUTF16(
                                     IDS_ERRORPAGES_SUGGESTION_LEARNMORE_BODY));
   suggest_learn_more->SetString("learnMoreUrl", learn_more_url.spec());
   error_strings->Set("suggestionsLearnMore", suggest_learn_more);
 #endif  // defined(OS_CHROMEOS)
 }