[subresource_filter] Replace KMP by std::search.

components/subresource_filter/core/common/test_ruleset_utils.cc

Index: components/subresource_filter/core/common/test_ruleset_utils.cc
diff --git a/components/subresource_filter/core/common/test_ruleset_utils.cc b/components/subresource_filter/core/common/test_ruleset_utils.cc
index e97548eced7e190a15055cccad56493eef9cbb7b..fe1207de09ecfe037abad4cb7b3dfc785b80a609 100644
--- a/components/subresource_filter/core/common/test_ruleset_utils.cc
+++ b/components/subresource_filter/core/common/test_ruleset_utils.cc
@@ -7,15 +7,23 @@
 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_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);
-  rule.set_url_pattern(suffix.as_string());
   return rule;
 }