Modified the certificate details viewers to include the timezone in the certificates validity dates.

chrome/browser/ui/webui/certificate_viewer_webui.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/browser/ui/webui/certificate_viewer_webui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/i18n/time_formatting.h"
 #include "base/json/json_writer.h"
@@ skipping 329 matching lines @@
 
   node_details->Set("children", cert_sub_fields = new base::ListValue());
   cert_sub_fields->Append(node_details = new base::DictionaryValue());
   node_details->SetString("label",
       l10n_util::GetStringUTF8(IDS_CERT_DETAILS_NOT_BEFORE));
   cert_sub_fields->Append(alt_node_details = new base::DictionaryValue());
   alt_node_details->SetString("label",
       l10n_util::GetStringUTF8(IDS_CERT_DETAILS_NOT_AFTER));
   base::Time issued, expires;
   if (x509_certificate_model::GetTimes(cert, &issued, &expires)) {
-    node_details->SetString("payload.val",
-        base::UTF16ToUTF8(base::TimeFormatShortDateAndTime(issued)));
-    alt_node_details->SetString("payload.val",
-        base::UTF16ToUTF8(base::TimeFormatShortDateAndTime(expires)));
+    // The object Time internally saves the time in UTC timezone. This is why we
+    // do a simple UTC string concatenation.
+    node_details->SetString(
+        "payload.val",
+        base::UTF16ToUTF8(base::TimeFormatShortDateAndTime(issued)) + " " +
+            l10n_util::GetStringUTF8(IDS_CERT_DETAILS_VALIDITY_TIMEZONE));

[jww, 2014/05/27 23:43:29]

Change these two variable references as mentioned in my generated_resources.grd
comment.

[mhm, 2014/05/28 00:02:44]

Done.

+    alt_node_details->SetString(
+        "payload.val",
+        base::UTF16ToUTF8(base::TimeFormatShortDateAndTime(expires)) + " " +
+            l10n_util::GetStringUTF8(IDS_CERT_DETAILS_VALIDITY_TIMEZONE));
   }
 
   cert_fields->Append(node_details = new base::DictionaryValue());
   node_details->SetString("label",
       l10n_util::GetStringUTF8(IDS_CERT_DETAILS_SUBJECT));
   node_details->SetString("payload.val",
       x509_certificate_model::GetSubjectName(cert));
 
   // Subject key information.
   cert_fields->Append(node_details = new base::DictionaryValue());
@@ skipping 70 matching lines @@
     const base::ListValue* args) const {
   int cert_index;
   double val;
   if (!(args->GetDouble(0, &val)))
     return -1;
   cert_index = static_cast<int>(val);
   if (cert_index < 0 || cert_index >= static_cast<int>(cert_chain_.size()))
     return -1;
   return cert_index;
 }