NavigationThrottle: allow customization of net::Error when blocking

extensions/browser/extension_navigation_throttle.cc

Index: extensions/browser/extension_navigation_throttle.cc
diff --git a/extensions/browser/extension_navigation_throttle.cc b/extensions/browser/extension_navigation_throttle.cc
index a61e6c8f54490ae543eca94c9acff12adf8dba95..1d4a17d4954c92964c5e494edf747e706c114139 100644
--- a/extensions/browser/extension_navigation_throttle.cc
+++ b/extensions/browser/extension_navigation_throttle.cc
@@ -193,7 +193,7 @@ ExtensionNavigationThrottle::WillStartRequest() {
 content::NavigationThrottle::ThrottleCheckResult
 ExtensionNavigationThrottle::WillRedirectRequest() {
   ThrottleCheckResult result = WillStartOrRedirectRequest();
-  if (result == BLOCK_REQUEST) {
+  if (result.action() == BLOCK_REQUEST) {
     // BLOCK_REQUEST is on redirect does not work without PlzNavigate, so
     // translate these errors into CANCEL.
     return CANCEL;