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

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 2708 matching lines @@
         </message>
         <message name="IDS_CERT_DETAILS_VALIDITY" desc="The label of the Validity element in the details page of the certificate info dialog.">
           Validity
         </message>
         <message name="IDS_CERT_DETAILS_NOT_BEFORE" desc="The label of the Validity->Not Before element in the details page of the certificate info dialog.">
           Not Before
         </message>
         <message name="IDS_CERT_DETAILS_NOT_AFTER" desc="The label of the Validity->Not After element in the details page of the certificate info dialog.">
           Not After
         </message>
+        <message name="IDS_CERT_DETAILS_VALIDITY_TIMEZONE" desc="The string specifying the timezone in the Validity->Not Before and Validity->Not After elements in the details page of the certificate info dialog.">
+          (UTC)

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

nit: I'd rename this to IDS_CERT_DETAILS_UTC_TIMEZONE since it's really
specifying one specific timezone.

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

Done.

+        </message>
         <message name="IDS_CERT_DETAILS_SUBJECT" desc="The label of the Subject element in the details page of the certificate info dialog. (In this case, subject refers to the entity the certificate was issued to.)">
           Subject
         </message>
         <message name="IDS_CERT_DETAILS_SUBJECT_KEY_INFO" desc="The label of the Subject Public Key Info element in the details page of the certificate info dialog. (In this case, subject refers to the entity the certificate was issued to.)">
           Subject Public Key Info
         </message>
         <message name="IDS_CERT_DETAILS_SUBJECT_KEY_ALG" desc="The label of the Subject Public Key Algorithm element in the details page of the certificate info dialog. (In this case, subject refers to the entity the certificate was issued to.)">
           Subject Public Key Algorithm
         </message>
         <message name="IDS_CERT_DETAILS_SUBJECT_KEY" desc="The label of the Subject's Public Key element in the details page of the certificate info dialog. (In this case, subject refers to the entity the certificate was issued to.)">
@@ skipping 11400 matching lines @@
     <message name="IDS_FLAGS_EXTENSION_CONTENT_VERIFICATION_ENFORCE" desc="Description of the 'Extension Content Verification' enforce mode">
       Enforce (try to get hashes, and enforce them if successful)
     </message>
 
     <message name="IDS_FLAGS_EXTENSION_CONTENT_VERIFICATION_ENFORCE_STRICT" desc="Description of the 'Extension Content Verification' enforce strict mode">
       Enforce strict (hard fail if we can't get hashes)
     </message>
   </messages>
   </release>
 </grit>