Linux: update infobar message shown on systems no longer supported.

chrome/app/chromium_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 <!-- This file contains definitions of strings that are distribution specific.
 These strings will not be translated and only english versions will
 be available for now. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/chromium_strings.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 665 matching lines @@
       </if>
       <message name="IDS_FLAGS_SHOW_APP_LIST_SHORTCUT_NAME" desc="Name for the flag to show the Chromium app list shortcut in the taskbar.">
         Show Chromium App Launcher.
       </message>
       <message name="IDS_FLAGS_SHOW_APP_LIST_SHORTCUT_DESCRIPTION" desc="Description for the flag to show the Chromium app list shortcut in the taskbar.">
         Show a shortcut to the Chromium App Launcher in the Windows TaskBar.
       </message>
 
       <!-- Obsolete System info bar -->
       <message name="IDS_SYSTEM_OBSOLETE_MESSAGE" desc="Message shown when your OS is no longer supported. This messages is followed by a 'Learn more' link.">
-         Chromium is no longer updating because your operating system is obsolete.
+         Chromium has stopped updating and no longer supports this version of your operating system.
       </message>
 
       <!-- about:memory -->
       <if expr="not pp_ifdef('android')">
         <message name="IDS_MEMORY_USAGE_SUMMARY_DESC" desc="Describes the browser summary table in the about memory page, which shows memory usage for Chromium and any other active browsers." translateable="false">
 Summary of memory used by currently active browsers. For browsers which use multiple processes, memory reflects aggregate memory used across all browser processes.
 
 For Chromium, processes used to display diagnostics information (such as this "about:memory") are excluded.
         </message>
       </if>
@@ skipping 290 matching lines @@
 
       <!-- Chrome OS OOBE Terms of Service screen-->
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_TERMS_OF_SERVICE_SCREEN_SUBHEADING" desc="Subheading at the top of the Terms of Service screen.">
           <ph name="DOMAIN">$1<ex>example.com</ex></ph> requires that you read and accept the following Terms of Service before using this device. These terms do not expand, modify or limit the Chromium OS Terms.
         </message>
       </if>
     </messages>
   </release>
 </grit>