Remove unused constants and functions from Files app.

chrome/common/extensions/api/file_manager_private.idl

 // Copyright 2013 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.
 
 // fileManagerPrivate API.
 // This is a private API used by the file browser of ChromeOS.
 [platforms=("chromeos"),
  implemented_in="chrome/browser/chromeos/extensions/file_manager/file_manager_private_api_functions.h"]
 namespace fileManagerPrivate {
 // Type of the mounted volume.
-enum VolumeType { drive, downloads, removable, archive, cloud_device, provided,
-                  mtp, testing };
+enum VolumeType { drive, downloads, removable, archive, provided, mtp,
+                  testing };
 
 // Device type. Available if this is removable volume.
 enum DeviceType { usb, sd, optical, mobile, unknown };
 
 // Additional data about mount, for example, that the filesystem is not
 // supported.
 enum MountCondition { unknown, unsupported };
 
 // Additional information of the context the volume was mounted.
 enum MountContext { user, auto };
@@ skipping 495 matching lines @@
 
 // |result| Hash containing the string assets.
 callback GetStringsCallback = void(object result);
 
 // |success| True when file watch is successfully added.
 callback AddFileWatchCallback = void(optional boolean success);
 
 // |success| True when file watch is successfully removed.
 callback RemoveFileWatchCallback = void(optional boolean success);
 
-// |fileSystem| A DOMFileSystem instance for local file system access. null if
-// the caller has no appropriate permissions.
-callback RequestFileSystemCallback = void(optional object fileSystem);
-
 // |entryProperties| A dictionary containing properties of the requested
 // entries.
 callback GetEntryPropertiesCallback =
     void(EntryProperties[] entryProperties);
 
 // |sourcePath| Source path of the mount.
 callback AddMountCallback = void(DOMString sourcePath);
 
 // |volumeMetadataList| The list of VolumeMetadata representing mounted volumes.
 callback GetVolumeMetadataListCallback =
@@ skipping 346 matching lines @@
 
   static void onPreferencesChanged();
 
   static void onDriveConnectionStatusChanged();
 
   static void onDeviceChanged(DeviceEvent event);
 
   static void onDriveSyncError(DriveSyncErrorEvent event);
 };
 };