Gave native File Browser file handlers higher priority than 3rd party handlers.

chrome/browser/chromeos/extensions/file_browser_private_api.cc

Index: chrome/browser/chromeos/extensions/file_browser_private_api.cc
diff --git a/chrome/browser/chromeos/extensions/file_browser_private_api.cc b/chrome/browser/chromeos/extensions/file_browser_private_api.cc
index 8222f6bc3775fe5ee5b396568c702a708f74cae8..80bda252cb0c1f5c0e2fd05ed0981becf1455d58 100644
--- a/chrome/browser/chromeos/extensions/file_browser_private_api.cc
+++ b/chrome/browser/chromeos/extensions/file_browser_private_api.cc
@@ -558,7 +558,11 @@ bool GetFileTasksFileBrowserFunction::RunImpl() {
   result_.reset(result_list);
 
   file_handler_util::LastUsedHandlerList common_tasks;
-  if (!file_handler_util::FindCommonTasks(profile_, file_urls, &common_tasks))
+  if (!file_handler_util::FindCommonTasks(
+      profile_,
+      file_urls,
+      kFileBrowserDomain,
+      &common_tasks))
     return false;
 
   ExtensionService* service = profile_->GetExtensionService();