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

chrome/app/chromium_strings.grd

Index: chrome/app/chromium_strings.grd
diff --git a/chrome/app/chromium_strings.grd b/chrome/app/chromium_strings.grd
index 73737c0ddb7e7d781446f12a110f05e3a3adc7dc..93c3c262e07be72961ef2f48c2dae168455bba99 100644
--- a/chrome/app/chromium_strings.grd
+++ b/chrome/app/chromium_strings.grd
@@ -657,6 +657,12 @@ Chromium is unable to recover your settings.
           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.">
@@ -915,6 +921,11 @@ For Chromium, processes used to display diagnostics information (such as this "a
           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>