Add enable-app-launcher-shim to chrome://flags.

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 d7d7d1f71a708db086d98fb5687a7447439c15ea..a354c898ce60873d15ed426b8ffe58f236d1530d 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -7104,6 +7104,14 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_ENABLE_SCREEN_CAPTURE_DESCRIPTION" desc="Description of flag to enable screen capture.">
         Allow web pages to request access to the screen contents via the getUserMedia() API.
       </message>
+      <if expr="is_macosx">

[jackhou1, 2013/05/29 06:59:19]

What's the convention for where to put these? Should it be after
ENABLE_RESET_PROFILE_SETTINGS_DESCRIPTION like in about_flags.cc?

+        <message name="IDS_FLAGS_ENABLE_APP_LIST_SHIM_NAME" desc="Name of the flag to create or delete the app launcher app bundle.">
+          Enable App Launcher OSX app bundle.
+        </message>
+        <message name="IDS_FLAGS_ENABLE_APP_LIST_SHIM_DESCRIPTION" desc="Description of the flag to create or delete the app launcher app bundle.">
+          Enable to ensure an OSX app bundle for the App Launcher exists under the Applications folder. Disable to delete any previously created app bundle for the App Launcher.
+        </message>
+      </if>
       <message name="IDS_FLAGS_ENABLE_APPS_DEVTOOL_APP_NAME" desc="Name of the flag to enable apps-devtools app.">
         Enable apps-devtool app.
       </message>