Add the client for accessing Subresource Filter only list.

components/subresource_filter/content/browser/content_activation_list_utils.cc

 // Copyright 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.
 
 #include "components/subresource_filter/content/browser/content_activation_list_utils.h"
 
 namespace subresource_filter {
 
 ActivationList GetListForThreatTypeAndMetadata(
     safe_browsing::SBThreatType threat_type,
     safe_browsing::ThreatPatternType threat_type_metadata) {
   bool is_phishing_interstitial =
       (threat_type == safe_browsing::SB_THREAT_TYPE_URL_PHISHING);
   bool is_soc_engineering_ads_interstitial =
       threat_type_metadata ==
       safe_browsing::ThreatPatternType::SOCIAL_ENGINEERING_ADS;
+  bool subresource_filter =
+      (threat_type == safe_browsing::SB_THREAT_TYPE_SUBRESOURCE_FILTER);
   if (is_phishing_interstitial) {
     if (is_soc_engineering_ads_interstitial) {
       return ActivationList::SOCIAL_ENG_ADS_INTERSTITIAL;
     }
     return ActivationList::PHISHING_INTERSTITIAL;
+  } else if (subresource_filter) {
+    return ActivationList::SUBRESOURCE_FILTER;
   }
+
   return ActivationList::NONE;
 }
 
 }  // namespace subresource_filter