Enable the new bookmark apps system by default.

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 569c69c3107aa3c6aba9aa2d4acfef9ff7c90fd0..9d5f803a75fee58f4f1a51f77a8b36fc50591a55 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6598,11 +6598,11 @@ Keep your key file in a safe place. You will need it to create new versions of y
           Do not use Smart Lock on sign-in screen, which allows you to sign in to your Chromebook when in proximity to your phone.
         </message>
       </if>
-      <message name="IDS_FLAGS_ENABLE_STREAMLINED_HOSTED_APPS_NAME" desc="Name of the flag to enable streamlined hosted apps.">
-        Enable experimental streamlined hosted apps.
+      <message name="IDS_FLAGS_DISABLE_NEW_BOOKMARK_APPS_NAME" desc="Name of the flag to disable the new bookmark app system.">
+        Disable the new bookmark app system.
       </message>
-      <message name="IDS_FLAGS_ENABLE_STREAMLINED_HOSTED_APPS_DESCRIPTION" desc="Description for the flag to enable streamlined hosted apps.">
-        Enables an experimental, more streamlined hosted app experience.
+      <message name="IDS_FLAGS_DISABLE_NEW_BOOKMARK_APPS_DESCRIPTION" desc="Description for the flag to disable the new bookmark app system.">
+        Disables the new system for creating bookmark apps.
       </message>
       <message name="IDS_FLAGS_ENABLE_EPHEMERAL_APPS_IN_WEBSTORE_NAME" desc="Name of the flag to enable ephemeral apps in the webstore.">
         Enable experimental ephemeral apps from the webstore.