Implement time stamp in new-style notification.

ui/strings/ui_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- This file contains definitions of resources that will be translated for
 each locale. Specifically, these are UI strings that are used by app/ that
 need to be translated for each locale.-->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       output_all_resource_defines="false" source_lang_id="en" enc_check="möl">
   <outputs>
     <!-- TODO add each of your output files.  Modify the three below, and add
@@ skipping 625 matching lines @@
       </message>
       <message name="IDS_MESSAGE_CENTER_LIST_NOTIFICATION_MESSAGE_WITH_DIVIDER" desc="The divider symbol of the title and the message of a sub item in list notification. In English, the title is on the left of this text. In RTL languages, the title is on the right of this message.">
         ''' - <ph name="message">$1<ex>This is the message!</ex></ph>'''
       </message>
       <message name="IDS_MESSAGE_CENTER_LIST_NOTIFICATION_HEADER_OVERFLOW_INDICATOR" desc="The overflow indicator shown on the notification header when a list notification has more list items than visible ones.">
         +<ph name="NUMBER">$1<ex>3</ex></ph> more
       </message>
       <message name="IDS_MESSAGE_CENTER_NOTIFICATION_PROGRESS_PERCENTAGE" desc="The summary text in a notification that is shown with progress bar.">
         <ph name="NUMBER">$1<ex>75</ex></ph> %
       </message>
+      <message name="IDS_MESSAGE_NOTIFICATION_NOW_STRING_SHORTEST" desc="A string denoting the current point in time that should be as short as possible. Should be same as AndroidPlatform msgId 8912796667087856402. (frameworks/base/core/res/res/values/strings.xml:string:now_string_shortest)">
+        now
+      </message>
+      <message name="IDS_MESSAGE_NOTIFICATION_DURATION_MINUTES_SHORTEST" desc="Phrase describing a time duration using minutes that is as short as possible, preferrably one character. Should be same as AndroidPlatform msgId 3957499975064245495. (frameworks/base/core/res/res/values/strings.xml:plurals:duration_minutes_shortest) [ICU Syntax]">
+        {MINUTES, plural, =1 {1m} other {#m}}
+      </message>
+      <message name="IDS_MESSAGE_NOTIFICATION_DURATION_HOURS_SHORTEST" desc="Phrase describing a time duration using hours that is as short as possible, preferrably one character. Should be same as AndroidPlatform msgId 3552182110578602356. (frameworks/base/core/res/res/values/strings.xml:plurals:duration_hours_shortest) [ICU Syntax]">
+        {HOURS, plural, =1 {1h} other {#h}}
+      </message>
+      <message name="IDS_MESSAGE_NOTIFICATION_DURATION_DAYS_SHORTEST" desc="Phrase describing a time duration using days that is as short as possible, preferrably one character. Should be same as AndroidPlatform msgId 5213655532597081640. (frameworks/base/core/res/res/values/strings.xml:plurals:duration_days_shortest) [ICU Syntax]">
+        {DAYS, plural, =1 {1d} other {#d}}
+      </message>
+      <message name="IDS_MESSAGE_NOTIFICATION_DURATION_YEARS_SHORTEST" desc="Phrase describing a time duration using years that is as short as possible, preferrably one character. Should be same as AndroidPlatform msgId 7848711145196397042. (frameworks/base/core/res/res/values/strings.xml:plurals:duration_years_shortest) [ICU Syntax]">
+        {YEARS, plural, =1 {1y} other {#y}}
+      </message>
       <if expr="not use_titlecase">
         <message name="IDS_MESSAGE_CENTER_QUIET_MODE_BUTTON_TOOLTIP" desc="The tooltip text for the do not disturb button.">
           Do not disturb
         </message>
       </if>
       <if expr="use_titlecase">
         <message name="IDS_MESSAGE_CENTER_QUIET_MODE_BUTTON_TOOLTIP" desc="In Title Case: The tooltip text for the do not disturb button.">
           Do Not Disturb
         </message>
       </if>
@@ skipping 82 matching lines @@
       <!-- Display names -->
       <message name="IDS_DISPLAY_NAME_UNKNOWN" desc="The name used for a display whose name is unknown, which is shown in the display settings and ash tray.">
         Unknown Display
       </message>
       <message name="IDS_DISPLAY_NAME_INTERNAL" desc="The name used for internal displays, which is shown in the display settings.">
         Internal Display
       </message>
     </messages>
   </release>
 </grit>