Adds API tests for listRemovableStorageDevices

chrome/common/extensions/api/_permission_features.json

 // 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.
 
 // This features file defines permissions for extension APIs implemented
 // under src/chrome.
 // See extensions/common/features/* to understand this file, in particular
 // feature.h, simple_feature.h, and base_feature_provider.h.
 
 // To add a new whitelisted ID, SHA-1 it and force it to uppercase. In Bash:
@@ skipping 717 matching lines @@
   },
   "pushMessaging": {
     "channel": "stable",
     "extension_types": ["extension", "platform_app"]
   },
   "imageWriterPrivate": {
     "channel": "stable",
     "extension_types": ["platform_app"],
     "whitelist": [
       "A291B26E088FA6BA53FFD72F0916F06EBA7C585A", // http://crbug.com/329088
-      "D7986543275120831B39EF28D1327552FC343960"  // http://crbug.com/329088
+      "D7986543275120831B39EF28D1327552FC343960", // http://crbug.com/329088
+      "BCC85C0D7F85897F2699974421EA402144C35C0C"  // API Test
     ]
   },
   "readingListPrivate": {
     "channel": "stable",
     "extension_types": ["extension"],
     "whitelist": [
       "D5736E4B5CF695CB93A2FB57E4FDC6E5AFAB6FE2", // http://crbug.com/312900
       "D57DE394F36DC1C3220E7604C575D29C51A6C495"  // http://crbug.com/319444
     ]
   },
@@ skipping 212 matching lines @@
     // Only allowed for whitelisted extensions until all the caveats are
     // addressed. Tracked in crbug/285151.
     "channel": "stable",
     "extension_types": ["extension"],
     "location": "component",
     "whitelist": [
       "D519188F86D9ACCEE0412007B227D9936EB9676B"  // GAIA Component Extension
     ]
   }]
 }