[unpacker] Add a disable flag for the new zip unpacker.

chromeos/chromeos_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 "chromeos/chromeos_switches.h"
 
 namespace chromeos {
 namespace switches {
 
 // Path for app's OEM manifest file.
@@ skipping 38 matching lines @@
 // Disable login/lock UI (user pods) scrolling into view on JS side when virtual
 // keyboard is shown.
 const char kDisableLoginScrollIntoView[] = "disable-login-scroll-into-view";
 
 // Disable new channel switcher UI.
 const char kDisableNewChannelSwitcherUI[] = "disable-new-channel-switcher-ui";
 
 // Disables new Kiosk UI when kiosk apps are represented as user pods.
 const char kDisableNewKioskUI[] = "disable-new-kiosk-ui";
 
+// Disables the new File System Provider API based ZIP unpacker.
+const char kDisableNewZIPUnpacker[] = "disable-new-zip-unpacker";
+
 // Disable Office Editing for Docs, Sheets & Slides component app so handlers
 // won't be registered, making it possible to install another version for
 // testing.
 const char kDisableOfficeEditingComponentApp[] =
     "disable-office-editing-component-extension";
 
 // Disables rollback option on reset screen.
 const char kDisableRollbackOption[] = "disable-rollback-option";
 
 // Disables volume adjust sound.
@@ skipping 183 matching lines @@
 
 // Screenshot testing: specifies the directory where the golden screenshots are
 // stored.
 const char kGoldenScreenshotsDir[] = "golden-screenshots-dir";
 
 // Screenshot testing: specifies the directoru where artifacts will be stored.
 const char kArtifactsDir[] = "artifacts-dir";
 
 }  // namespace switches
 }  // namespace chromeos