Add GURL::HostNoBracketsPiece()

content/browser/frame_host/mixed_content_navigation_throttle.cc

Index: content/browser/frame_host/mixed_content_navigation_throttle.cc
diff --git a/content/browser/frame_host/mixed_content_navigation_throttle.cc b/content/browser/frame_host/mixed_content_navigation_throttle.cc
index a267d39e9084fcf3f86fb684029d14e06694e3de..d0a7466be1b81db8b73029d4fa5375d06ebc95be 100644
--- a/content/browser/frame_host/mixed_content_navigation_throttle.cc
+++ b/content/browser/frame_host/mixed_content_navigation_throttle.cc
@@ -70,7 +70,7 @@ bool IsUrlPotentiallySecure(const GURL& url) {
   // https://tools.ietf.org/html/draft-west-let-localhost-be-localhost-03. See:
   // https://crbug.com/691930.
   if (is_secure && url.SchemeIs(url::kHttpScheme) &&
-      net::IsLocalHostname(url.HostNoBrackets(), nullptr)) {
+      net::IsLocalHostname(url.HostNoBracketsPiece(), nullptr)) {
     is_secure = false;
   }