[subresource_filter] Replace KMP by std::search.

components/subresource_filter/core/common/test_ruleset_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/core/common/test_ruleset_utils.h"
 
 namespace subresource_filter {
 namespace testing {
 
-proto::UrlRule CreateSuffixRule(base::StringPiece suffix) {
+proto::UrlRule CreateUrlRule(base::StringPiece pattern,
+                             proto::UrlPatternType pattern_type) {
   proto::UrlRule rule;
   rule.set_semantics(proto::RULE_SEMANTICS_BLACKLIST);
   rule.set_source_type(proto::SOURCE_TYPE_ANY);
   rule.set_element_types(proto::ELEMENT_TYPE_ALL);
-  rule.set_url_pattern_type(proto::URL_PATTERN_TYPE_SUBSTRING);
+  rule.set_url_pattern_type(pattern_type);
   rule.set_anchor_left(proto::ANCHOR_TYPE_NONE);
-  rule.set_anchor_right(proto::ANCHOR_TYPE_BOUNDARY);
-  rule.set_url_pattern(suffix.as_string());
+  rule.set_anchor_right(proto::ANCHOR_TYPE_NONE);
+  rule.set_url_pattern(pattern.as_string());
   return rule;
 }
 
+proto::UrlRule CreateSuffixRule(base::StringPiece suffix) {
+  proto::UrlRule rule =
+      CreateUrlRule(suffix, proto::URL_PATTERN_TYPE_SUBSTRING);
+  rule.set_anchor_right(proto::ANCHOR_TYPE_BOUNDARY);
+  return rule;
+}
+
 proto::UrlRule CreateWhitelistRuleForDocument(
     base::StringPiece pattern,
     int32_t activation_types,
     std::vector<std::string> domains) {
   proto::UrlRule rule;
   rule.set_semantics(proto::RULE_SEMANTICS_WHITELIST);
   rule.set_source_type(proto::SOURCE_TYPE_ANY);
   rule.set_activation_types(activation_types);
 
   for (std::string& domain : domains) {
     rule.add_domains()->set_domain(std::move(domain));
   }
 
   rule.set_url_pattern_type(proto::URL_PATTERN_TYPE_SUBSTRING);
   rule.set_anchor_left(proto::ANCHOR_TYPE_NONE);
   rule.set_anchor_right(proto::ANCHOR_TYPE_NONE);
   rule.set_url_pattern(pattern.as_string());
   return rule;
 }
 
 }  // namespace testing
 }  // namespace subresource_filter