[NOT FOR LANDING] Detailed loading traces

net/extras/sqlite/sqlite_persistent_cookie_store.cc

Index: net/extras/sqlite/sqlite_persistent_cookie_store.cc
diff --git a/net/extras/sqlite/sqlite_persistent_cookie_store.cc b/net/extras/sqlite/sqlite_persistent_cookie_store.cc
index b7254a42620155cf18ac907e2a00c2669b770323..857a5c702376e20528341251dd30f1207b86fcea 100644
--- a/net/extras/sqlite/sqlite_persistent_cookie_store.cc
+++ b/net/extras/sqlite/sqlite_persistent_cookie_store.cc
@@ -7,6 +7,7 @@
 #include <map>
 #include <set>
 
+#include "base/trace_event/trace_event.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/files/file_path.h"
@@ -1366,6 +1367,8 @@ void SQLitePersistentCookieStore::Load(const LoadedCallback& loaded_callback) {
 void SQLitePersistentCookieStore::LoadCookiesForKey(
     const std::string& key,
     const LoadedCallback& loaded_callback) {
+  TRACE_EVENT0("toplevel", "SQLitePersistentCookieStore::LoadCookiesForKey");
+
   if (backend_)
     backend_->LoadCookiesForKey(key, loaded_callback);
   else