file_manager: Do not return ARC tasks if a directory is selected

chrome/browser/chromeos/file_manager/arc_file_tasks.cc

 // Copyright (c) 2016 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 "chrome/browser/chromeos/file_manager/arc_file_tasks.h"
 
 #include <memory>
 #include <string>
 #include <vector>
 
@@ skipping 278 matching lines @@
 
   arc::mojom::IntentHelperInstance* arc_intent_helper =
       GetArcIntentHelper(profile, kArcIntentHelperVersionWithUrlListSupport);
   if (!arc_intent_helper) {
     callback.Run(std::move(result_list));
     return;
   }
 
   mojo::Array<arc::mojom::UrlWithMimeTypePtr> urls;
   for (const extensions::EntryInfo& entry : entries) {
+    if (entry.is_directory) {  // ARC apps don't support directories.
+      callback.Run(std::move(result_list));
+      return;
+    }
+
     GURL url;
     if (!ConvertToArcUrl(entry.path, &url)) {
       callback.Run(std::move(result_list));
       return;
     }
 
     arc::mojom::UrlWithMimeTypePtr url_with_type =
         arc::mojom::UrlWithMimeType::New();
     url_with_type->url = url.spec();
     url_with_type->mime_type = entry.mime_type;
@@ skipping 39 matching lines @@
   } else {
     arc_intent_helper->HandleUrlListDeprecated(
         std::move(urls), AppIdToActivityName(task.app_id)->package_name,
         StringToArcAction(task.action_id));
   }
   return true;
 }
 
 }  // namespace file_tasks
 }  // namespace file_manager