Tracing for NavigationHandle lifetime and state.

components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.cc

Index: components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.cc
diff --git a/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.cc b/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.cc
index d75a56a34888595fe72228aeef84b87fccbfc5ca..4d728239ced8a6a02b0dd5b64e52c2020a1896e8 100644
--- a/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.cc
+++ b/components/subresource_filter/content/browser/subresource_filter_safe_browsing_activation_throttle.cc
@@ -122,6 +122,11 @@ SubresourceFilterSafeBrowsingActivationThrottle::WillProcessResponse() {
   return content::NavigationThrottle::ThrottleCheckResult::DEFER;
 }
 
+const char*
+SubresourceFilterSafeBrowsingActivationThrottle::GetNameForLogging() {
+  return "SubresourceFilterSafeBrowsingActivationThrottle";
+}
+
 void SubresourceFilterSafeBrowsingActivationThrottle::OnCheckUrlResultOnUI(
     const GURL& url,
     safe_browsing::SBThreatType threat_type,