(WIP) Use generator to generate externs for chrome.fileManagerPrivate API.

ui/file_manager/file_manager/foreground/js/directory_model.js

Index: ui/file_manager/file_manager/foreground/js/directory_model.js
diff --git a/ui/file_manager/file_manager/foreground/js/directory_model.js b/ui/file_manager/file_manager/foreground/js/directory_model.js
index 643e22520a3ed8934fe618868d07adb1b8c9d66d..cd30315de4a299dfb2546f2393414ef9fd554776 100644
--- a/ui/file_manager/file_manager/foreground/js/directory_model.js
+++ b/ui/file_manager/file_manager/foreground/js/directory_model.js
@@ -1211,16 +1211,13 @@ DirectoryModel.prototype.createDirectoryContents_ =
     var searchType;
     switch (locationInfo.rootType) {
       case VolumeManagerCommon.RootType.DRIVE_OFFLINE:
-        searchType =
-            DriveMetadataSearchContentScanner.SearchType.SEARCH_OFFLINE;
+        searchType = chrome.fileManagerPrivate.SearchType.OFFLINE;
         break;
       case VolumeManagerCommon.RootType.DRIVE_SHARED_WITH_ME:
-        searchType =
-            DriveMetadataSearchContentScanner.SearchType.SEARCH_SHARED_WITH_ME;
+        searchType = chrome.fileManagerPrivate.SearchType.SHARED_WITH_ME;
         break;
       case VolumeManagerCommon.RootType.DRIVE_RECENT:
-        searchType =
-            DriveMetadataSearchContentScanner.SearchType.SEARCH_RECENT_FILES;
+        searchType = chrome.fileManagerPrivate.SearchType.EXCLUDE_DIRECTORIES;
         break;
       default:
         // Unknown special search entry.