Add Team Drive subtree to the directory list view.

ui/file_manager/file_manager/common/js/volume_manager_common.js

Index: ui/file_manager/file_manager/common/js/volume_manager_common.js
diff --git a/ui/file_manager/file_manager/common/js/volume_manager_common.js b/ui/file_manager/file_manager/common/js/volume_manager_common.js
index 6c5e9420762e2ee1ef8bc90ea29ae07c650d5f25..355344f1897cb01e8207fb32de66b620d1808bb4 100644
--- a/ui/file_manager/file_manager/common/js/volume_manager_common.js
+++ b/ui/file_manager/file_manager/common/js/volume_manager_common.js
@@ -37,6 +37,12 @@ VolumeManagerCommon.RootType = {
   // Root for a drive volume.
   DRIVE: 'drive',
 
+  // The grand root entry of Team Drives in Drive volume.
+  TEAM_DRIVES_GRAND_ROOT: 'team_drives_grand_root',
+
+  // Root directory of a Team Drive.
+  TEAM_DRIVE: 'team_drive',
+
   // Root for a MTP volume.
   MTP: 'mtp',
 
@@ -179,6 +185,7 @@ VolumeManagerCommon.getVolumeTypeFromRootType = function(rootType) {
     case VolumeManagerCommon.RootType.REMOVABLE:
       return VolumeManagerCommon.VolumeType.REMOVABLE;
     case VolumeManagerCommon.RootType.DRIVE:
+    case VolumeManagerCommon.RootType.TEAM_DRIVE:
     case VolumeManagerCommon.RootType.DRIVE_OTHER:
     case VolumeManagerCommon.RootType.DRIVE_OFFLINE:
     case VolumeManagerCommon.RootType.DRIVE_SHARED_WITH_ME:
@@ -259,3 +266,7 @@ var FakeEntry;
   * @const {string}
   */
 VolumeManagerCommon.VOLUME_ALREADY_MOUNTED = 'volume_already_mounted';
+
+VolumeManagerCommon.TEAM_DRIVES_DIRECTORY_NAME = 'team_drives';
+VolumeManagerCommon.TEAM_DRIVES_DIRECTORY_PATH =
+    '/' + VolumeManagerCommon.TEAM_DRIVES_DIRECTORY_NAME;