Tracing for NavigationHandle lifetime and state.

components/navigation_interception/intercept_navigation_throttle.cc

Index: components/navigation_interception/intercept_navigation_throttle.cc
diff --git a/components/navigation_interception/intercept_navigation_throttle.cc b/components/navigation_interception/intercept_navigation_throttle.cc
index c66a302286ec08a919b8f3e931b0c5cdce8f4a99..25875f0ae70769d65498803a1f4abd98c4b9ffee 100644
--- a/components/navigation_interception/intercept_navigation_throttle.cc
+++ b/components/navigation_interception/intercept_navigation_throttle.cc
@@ -62,6 +62,10 @@ InterceptNavigationThrottle::WillRedirectRequest() {
   return CheckIfShouldIgnoreNavigation(true);
 }
 
+const char* InterceptNavigationThrottle::GetNameForLogging() {
+  return "InterceptNavigationThrottle";
+}
+
 content::NavigationThrottle::ThrottleCheckResult
 InterceptNavigationThrottle::CheckIfShouldIgnoreNavigation(bool is_redirect) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);