Tracing for NavigationHandle lifetime and state.

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 0c06bd83cffa8d41a921eba9972088fcdd0a4561..bb5137148c7c948ae3f85f0053051e87ae883751 100644
--- a/extensions/browser/extension_navigation_throttle.cc
+++ b/extensions/browser/extension_navigation_throttle.cc
@@ -160,4 +160,8 @@ ExtensionNavigationThrottle::WillStartRequest() {
   return content::NavigationThrottle::BLOCK_REQUEST;
 }
 
+const char* ExtensionNavigationThrottle::GetNameForLogging() {
+  return "ExtensionNavigationThrottle";
+}
+
 }  // namespace extensions