Add the --disable-off-store-extension-install switch.

chrome/common/chrome_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 317 matching lines @@
 // is needed for a domain which shares an IP with an existing connection,
 // attempt to use the existing connection.
 const char kDisableIPPooling[]              = "disable-ip-pooling";
 
 // Avoid doing expensive animations upon login.
 const char kDisableLoginAnimations[]        = "disable-login-animations";
 
 // Disables the menu on the NTP for accessing sessions from other devices.
 const char kDisableNTPOtherSessionsMenu[]   = "disable-ntp-other-sessions-menu";
 
+// Disables the inline off-store extension installation UI. With this switch,
+// users must use a new out-of-band installation UI from chrome://extensions/.
+const char kDisableOffStoreExtensionInstall[] =
+    "disable-off-store-extension-install";
+
 // Disable speculative TCP/IP preconnection.
 const char kDisablePreconnect[]             = "disable-preconnect";
 
 // Normally when the user attempts to navigate to a page that was the result of
 // a post we prompt to make sure they want to. This switch may be used to
 // disable that check. This switch is used during automated testing.
 const char kDisablePromptOnRepost[]         = "disable-prompt-on-repost";
 
 // Prevents the URLs of BackgroundContents from being remembered and
 // re-launched when the browser restarts.
@@ skipping 1068 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead, please
 // put them in alphabetical order above, or in order inside the appropriate
 // ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches