Prompt user for file access permission before download starts

content/public/browser/android/download_controller_android.cc

Index: content/public/browser/android/download_controller_android.cc
diff --git a/content/public/browser/android/download_controller_android.cc b/content/public/browser/android/download_controller_android.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c3af8105dfa5b6104a820e65a477d9ab2e10048e
--- /dev/null
+++ b/content/public/browser/android/download_controller_android.cc
@@ -0,0 +1,18 @@
+// Copyright (c) 2015 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 "content/public/browser/android/download_controller_android.h"
+
+namespace content {
+
+// static
+bool DownloadControllerAndroid::use_mock_controller_ = false;
+
+//static
+void DownloadControllerAndroid::UseMockControllerForTesting(
+    bool use_mock_controller) {
+  use_mock_controller_ = use_mock_controller;
+}
+
+}  // namespace content