Add a flag to control whether there is a shortcut for the app list / launcher in the Windows taskba…

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 639 matching lines @@
         </message>
       </if>
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_FLAGS_RELAUNCH_NOTICE" desc="Notifies the user that he needs to restart Chromium OS. Shown next to a button that says 'Restart Now'.">
           Your changes will take effect the next time you restart your device.
         </message>
         <message name="IDS_FLAGS_CHROME_CAPTIVE_PORTAL_DETECTOR" desc="Description for the option of Captive Portal detector.">
           Chromium Captive Portal detector
         </message>
       </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 Apps 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 Apps 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.
       </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.
@@ skipping 238 matching lines @@
           and deselect the &quot;Use a proxy server for your LAN&quot; checkbox.
         </message>
       </if>
 
       <!-- Chrome OS keyboard overlay-->
       <if expr="pp_ifdef('chromeos')">
         <message name="IDS_KEYBOARD_OVERLAY_SHOW_WRENCH_MENU" desc="The text in the keyboard overlay to explain the shortcut that opens the main Chrome menu.">
           Show the Chromium menu
         </message>
       </if>
+
+      <!-- App list -->
+      <message name="IDS_APP_LIST_SHORTCUT_NAME" desc="Name for the Chromium App List to appear in the taskbar and in any shortcuts to it.">
+        Chromium Apps Launcher
+      </message>
     </messages>
   </release>
 </grit>