Tracing for NavigationHandle lifetime and state.

components/subresource_filter/content/browser/activation_state_computing_navigation_throttle.cc

Index: components/subresource_filter/content/browser/activation_state_computing_navigation_throttle.cc
diff --git a/components/subresource_filter/content/browser/activation_state_computing_navigation_throttle.cc b/components/subresource_filter/content/browser/activation_state_computing_navigation_throttle.cc
index fddc75bd4d237f1f23e968a3f9bcf14ac66dce20..dfa6be5a8bd744d712f56147909d523b7d780494 100644
--- a/components/subresource_filter/content/browser/activation_state_computing_navigation_throttle.cc
+++ b/components/subresource_filter/content/browser/activation_state_computing_navigation_throttle.cc
@@ -97,6 +97,10 @@ ActivationStateComputingNavigationThrottle::WillProcessResponse() {
   return content::NavigationThrottle::ThrottleCheckResult::DEFER;
 }
 
+const char* ActivationStateComputingNavigationThrottle::GetNameForLogging() {
+  return "ActivationStateComputingNavigationThrottle";
+}
+
 void ActivationStateComputingNavigationThrottle::OnActivationStateComputed(
     ActivationState state) {
   navigation_handle()->Resume();