Add/improve tracing in navigation.

content/browser/frame_host/navigation_controller_impl.cc

Index: content/browser/frame_host/navigation_controller_impl.cc
diff --git a/content/browser/frame_host/navigation_controller_impl.cc b/content/browser/frame_host/navigation_controller_impl.cc
index 7219831781da79b9773546558123049ed17dc3f0..c4f05fdc199d2560d08acd5ded513397d745ec17 100644
--- a/content/browser/frame_host/navigation_controller_impl.cc
+++ b/content/browser/frame_host/navigation_controller_impl.cc
@@ -649,7 +649,9 @@ void NavigationControllerImpl::LoadURL(
 }
 
 void NavigationControllerImpl::LoadURLWithParams(const LoadURLParams& params) {
-  TRACE_EVENT0("browser", "NavigationControllerImpl::LoadURLWithParams");
+  TRACE_EVENT1("browser,navigation",
+               "NavigationControllerImpl::LoadURLWithParams",
+               "url", params.url.possibly_invalid_spec());
   if (HandleDebugURL(params.url, params.transition_type)) {
     // If Telemetry is running, allow the URL load to proceed as if it's
     // unhandled, otherwise Telemetry can't tell if Navigation completed.