[subresource_filter] Move throttle insertion into the client

chrome/browser/subresource_filter/navigation_throttle_util.h

Index: chrome/browser/subresource_filter/navigation_throttle_util.h
diff --git a/chrome/browser/subresource_filter/navigation_throttle_util.h b/chrome/browser/subresource_filter/navigation_throttle_util.h
deleted file mode 100644
index 99ed9e64affb90005c5cb56aacd3e55802dbb090..0000000000000000000000000000000000000000
--- a/chrome/browser/subresource_filter/navigation_throttle_util.h
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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 CHROME_BROWSER_SUBRESOURCE_FILTER_NAVIGATION_THROTTLE_UTIL_H_
-#define CHROME_BROWSER_SUBRESOURCE_FILTER_NAVIGATION_THROTTLE_UTIL_H_
-
-#include "content/public/browser/navigation_throttle.h"
-
-namespace safe_browsing {
-class SafeBrowsingService;
-}
-
-// Creates the CreateSubresourceFilterNavigationThrottle for the main frame and
-// the |safe_browsing_service| supporting pver4, |safe_browsing_service| can be
-// a nullptr.
-content::NavigationThrottle* MaybeCreateSubresourceFilterNavigationThrottle(
-    content::NavigationHandle* navigation_handle,
-    safe_browsing::SafeBrowsingService* safe_browsing_service);
-
-#endif  // CHROME_BROWSER_SUBRESOURCE_FILTER_NAVIGATION_THROTTLE_UTIL_H_