Remove old downloads UI; Material Design version is now the default.

chrome/browser/ui/webui/downloads_util.h

Index: chrome/browser/ui/webui/downloads_util.h
diff --git a/chrome/browser/ui/webui/downloads_util.h b/chrome/browser/ui/webui/downloads_util.h
deleted file mode 100644
index 69774605bcbd9978d66c64702eb5b54881750070..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/webui/downloads_util.h
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 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.
-
-#ifndef CHROME_BROWSER_UI_WEBUI_DOWNLOADS_UTIL_H_
-#define CHROME_BROWSER_UI_WEBUI_DOWNLOADS_UTIL_H_
-
-extern const char kMaterialDesignDownloadsFinchTrialName[];
-
-// Whether the Material Design version of chrome://downloads should be enabled.
-bool MdDownloadsEnabled();
-
-#endif  // CHROME_BROWSER_UI_WEBUI_DOWNLOADS_UTIL_H_