[downloads] Move platform specific code out of DownloadTargetDeterminer.

chrome/browser/download/download_confirmation_result.h

+// Copyright 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.
+
+#ifndef CHROME_BROWSER_DOWNLOAD_DOWNLOAD_CONFIRMATION_RESULT_H_
+#define CHROME_BROWSER_DOWNLOAD_DOWNLOAD_CONFIRMATION_RESULT_H_
+
+// Result of RequestConfirmation delegate method for
+// DownloadTargetDeterminerDelegate.
+enum class DownloadConfirmationResult {
+  // The user confirmed the path. Only use this value if the user was explicitly
+  // shown the path or at least the filename being downloaded.
+  CONFIRMED,
+
+  // The operation failed due to a reason other than a user cancellation.
+  FAILED,
+
+  // The user cancelled.
+  CANCELED,
+
+  // User was not explicitly prompted, but continue with current path. The
+  // delegate should use this value instead of CONFIRMED if the user was not
+  // presented with some UI that explicitly called out the filename being
+  // downloaded.
+  CONTINUE_WITHOUT_CONFIRMATION
+};
+
+#endif  // CHROME_BROWSER_DOWNLOAD_DOWNLOAD_CONFIRMATION_RESULT_H_