[NOT FOR LANDING] Detailed loading traces

content/browser/loader/cross_site_resource_handler.cc

Index: content/browser/loader/cross_site_resource_handler.cc
diff --git a/content/browser/loader/cross_site_resource_handler.cc b/content/browser/loader/cross_site_resource_handler.cc
index fad4024ee281877cededf0c7409b1476f45e1b5a..29653f1ba76af035b332c35d01e697ec4513831c 100644
--- a/content/browser/loader/cross_site_resource_handler.cc
+++ b/content/browser/loader/cross_site_resource_handler.cc
@@ -7,6 +7,7 @@
 #include <string>
 #include <utility>
 
+#include "base/trace_event/trace_event.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
@@ -120,6 +121,9 @@ CrossSiteResourceHandler::CrossSiteResourceHandler(
       weak_ptr_factory_(this) {}
 
 CrossSiteResourceHandler::~CrossSiteResourceHandler() {
+  TRACE_EVENT0("toplevel",
+               "CrossSiteResourceHandler::~CrossSiteResourceHandler");
+
   // Cleanup back-pointer stored on the request info.
   GetRequestInfo()->set_cross_site_handler(NULL);
 }