Introduce AsyncDocumentSubresourceFilter.

components/subresource_filter/core/common/indexed_ruleset.cc

 // 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.
 
 #include "components/subresource_filter/core/common/indexed_ruleset.h"
 
 #include <algorithm>
 #include <limits>
 #include <string>
 
@@ skipping 452 matching lines @@
     }
   }
 
   const FlatUrlRuleList* rules = index->fallback_rules();
   return MatchesAny(rules, url, initiator, element_type, activation_type,
                     is_third_party, disable_generic_rules);
 }
 
 }  // namespace
 
+// static
 bool IndexedRulesetMatcher::Verify(const uint8_t* buffer, size_t size) {
-  const auto* indexed_ruleset = flat::GetIndexedRuleset(buffer);
   flatbuffers::Verifier verifier(buffer, size);
-  return indexed_ruleset->Verify(verifier);
+  return flat::VerifyIndexedRulesetBuffer(verifier);
 }
 
 IndexedRulesetMatcher::IndexedRulesetMatcher(const uint8_t* buffer, size_t size)
     : root_(flat::GetIndexedRuleset(buffer)) {
   const flat::UrlPatternIndex* index = root_->blacklist_index();
   DCHECK(!index || index->n() == kNGramSize);
   index = root_->whitelist_index();
   DCHECK(!index || index->n() == kNGramSize);
 }
 
@@ skipping 22 matching lines @@
   const bool is_third_party = first_party.IsThirdParty(url);
   return IsMatch(root_->blacklist_index(), url, first_party.origin(),
                  element_type, proto::ACTIVATION_TYPE_UNSPECIFIED,
                  is_third_party, disable_generic_rules) &&
          !IsMatch(root_->whitelist_index(), url, first_party.origin(),
                   element_type, proto::ACTIVATION_TYPE_UNSPECIFIED,
                   is_third_party, disable_generic_rules);
 }
 
 }  // namespace subresource_filter