Disable app list folders by default for non-ChromeOS platforms.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 47e3aab4642b512c9b766cad81b96ccf126291af..258df7179ac0decab148e557476be37eb170df7a 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6810,7 +6810,13 @@ Keep your key file in a safe place. You will need it to create new versions of y
           Disable App Launcher folders.
         </message>
         <message name="IDS_FLAGS_DISABLE_APP_LIST_FOLDER_DESCRIPTION" desc="Description of the flag to disable the app list folder.">
-          Enabling this option prevents the user to create and manage folders in App Launcher.
+          Enabling this option prevents the user from creating and managing folders in the App Launcher.
+        </message>
+        <message name="IDS_FLAGS_ENABLE_APP_LIST_FOLDER" desc="Name of the flag to enable app list folders.">
+          Enable App Launcher folders.
+        </message>
+        <message name="IDS_FLAGS_ENABLE_APP_LIST_FOLDER_DESCRIPTION" desc="Description of the flag to enable app list folders.">
+          Enabling this option allows the user to create and manage folders in the App Launcher.
         </message>
         <message name="IDS_FLAGS_DISABLE_APP_LIST_VOICE_SEARCH" desc="Name of the flag to disable voice search in the app list.">
           Disable voice search in the App Launcher.