Use ENABLE_DISABLE_VALUE_TYPE for storage-manager switch and enable it by default on dev.

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"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
@@ skipping 92 matching lines @@
 
 // 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 experimental storage manager to manage local storage.
+const char kDisableStorageManager[] = "disable-storage-manager";
+
 // Disables volume adjust sound.
 const char kDisableVolumeAdjustSound[] = "disable-volume-adjust-sound";
 
 // Disables wake on wifi features.
 const char kDisableWakeOnWifi[] = "disable-wake-on-wifi";
 
 // Disables notifications about captive portals in session.
 const char kDisableNetworkPortalNotification[] =
     "disable-network-portal-notification";
 
@@ skipping 304 matching lines @@
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   if (!command_line->HasSwitch(kTestCrosGaiaIdMigration))
     return false;
 
   return command_line->GetSwitchValueASCII(kTestCrosGaiaIdMigration) ==
          kTestCrosGaiaIdMigrationStarted;
 }
 
 }  // namespace switches
 }  // namespace chromeos