From c274feca17f0f0345fef0475dc6cd8eb911d0ac0 Mon Sep 17 00:00:00 2001
From: Anthony Tseng <darkdh@gmail.com>
Date: Wed, 21 Feb 2018 16:26:26 -0800
Subject: [PATCH] Obtain extension from path when no mime type available fix
 https://github.com/brave/browser-laptop/issues/13230 fix
 https://github.com/brave/browser-laptop/issues/13228

Auditors: @bridiver, @bsclifton
---
 atom/browser/atom_download_manager_delegate.cc | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/atom/browser/atom_download_manager_delegate.cc b/atom/browser/atom_download_manager_delegate.cc
index 92c093f7d5..57ac9ad620 100644
--- a/atom/browser/atom_download_manager_delegate.cc
+++ b/atom/browser/atom_download_manager_delegate.cc
@@ -139,7 +139,12 @@ void AtomDownloadManagerDelegate::OnDownloadPathGenerated(
   if (path.empty()) {
     std::vector<base::FilePath::StringType> extensions;
     base::FilePath::StringType extension;
-    if (GetItemExtension(item, &extension)) {
+    if (!GetItemExtension(item, &extension)) {
+      extension = target_path.Extension();
+      if (!extension.empty())
+        extension.erase(extension.begin());  // Erase preceding '.'.
+    }
+    if (!extension.empty()) {
       extensions.push_back(extension);
       file_type_info.extensions.push_back(extensions);
     }