Revert of Added experiments section and exported the list of SafeBrowsing features in WebUI

components/safe_browsing/features.h

-// Copyright (c) 2017 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 COMPONENTS_SAFE_BROWSING_FEATURES_H_
-#define COMPONENTS_SAFE_BROWSING_FEATURES_H_
-
-#include <stddef.h>
-#include <algorithm>
-#include <utility>
-#include <vector>
-
-#include "base/feature_list.h"
-#include "base/macros.h"
-#include "base/values.h"
-namespace base {
-class ListValue;
-}  // namespace base
-
-namespace safe_browsing {
-// Features list
-extern const base::Feature kLocalDatabaseManagerEnabled;
-extern const base::Feature kV4OnlyEnabled;
-extern const base::Feature kThreatDomDetailsTagAndAttributeFeature;
-
-base::ListValue GetFeatureStatusList();
-
-#endif  // COMPONENTS_SAFE_BROWSING_FEATURES_H_
-}  // namespace safe_browsing