Reduce buggy usage of the registry controlled domain service.

chrome/browser/supervised_user/supervised_user_url_filter.cc

Index: chrome/browser/supervised_user/supervised_user_url_filter.cc
diff --git a/chrome/browser/supervised_user/supervised_user_url_filter.cc b/chrome/browser/supervised_user/supervised_user_url_filter.cc
index d2263138502cf31708946acc92bf74c88f9486a3..5ef1ab63730283adf7be8cfe6d76e59bd289866a 100644
--- a/chrome/browser/supervised_user/supervised_user_url_filter.cc
+++ b/chrome/browser/supervised_user/supervised_user_url_filter.cc
@@ -39,7 +39,7 @@
 using content::BrowserThread;
 using net::registry_controlled_domains::EXCLUDE_UNKNOWN_REGISTRIES;
 using net::registry_controlled_domains::EXCLUDE_PRIVATE_REGISTRIES;
-using net::registry_controlled_domains::GetRegistryLength;
+using net::registry_controlled_domains::GetRegistryLengthForCanonicalHost;
 using policy::URLBlacklist;
 using url_matcher::URLMatcher;
 using url_matcher::URLMatcherConditionSet;
@@ -280,12 +280,13 @@ bool SupervisedUserURLFilter::HasFilteredScheme(const GURL& url) {
 }
 
 // static
-bool SupervisedUserURLFilter::HostMatchesPattern(const std::string& host,
-                                                 const std::string& pattern) {
+bool SupervisedUserURLFilter::HostMatchesPattern(
+    const std::string& canonical_host,
+    const std::string& pattern) {
   std::string trimmed_pattern = pattern;
-  std::string trimmed_host = host;
+  std::string trimmed_host = canonical_host;
   if (base::EndsWith(pattern, ".*", base::CompareCase::SENSITIVE)) {
-    size_t registry_length = GetRegistryLength(
+    size_t registry_length = GetRegistryLengthForCanonicalHost(
         trimmed_host, EXCLUDE_UNKNOWN_REGISTRIES, EXCLUDE_PRIVATE_REGISTRIES);
     // A host without a known registry part does not match.
     if (registry_length == 0)