Reduce buggy usage of the registry controlled domain service.

content/renderer/webpublicsuffixlist_impl.cc

Index: content/renderer/webpublicsuffixlist_impl.cc
diff --git a/content/renderer/webpublicsuffixlist_impl.cc b/content/renderer/webpublicsuffixlist_impl.cc
index e1e00c22be28c7c42184e38d29999cb81d9f7308..7cb7d6b2d563981c6f0ebe8b82070885b9071fd2 100644
--- a/content/renderer/webpublicsuffixlist_impl.cc
+++ b/content/renderer/webpublicsuffixlist_impl.cc
@@ -12,12 +12,13 @@ WebPublicSuffixListImpl::~WebPublicSuffixListImpl() {
 }
 
 size_t WebPublicSuffixListImpl::getPublicSuffixLength(
-    const blink::WebString& host) {
-  size_t result = net::registry_controlled_domains::GetRegistryLength(
-      host.utf8(),
-      net::registry_controlled_domains::INCLUDE_UNKNOWN_REGISTRIES,
-      net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
-  return result ? result : host.length();
+    const blink::WebString& canonical_host) {
+  size_t result =
+      net::registry_controlled_domains::GetCanonicalHostRegistryLength(
+          canonical_host.utf8(),
+          net::registry_controlled_domains::INCLUDE_UNKNOWN_REGISTRIES,
+          net::registry_controlled_domains::INCLUDE_PRIVATE_REGISTRIES);
+  return result ? result : canonical_host.length();
 }
 
 } // namespace content