Change ui::Event::time_stamp from TimeDelta to TimeTicks

components/mus/common/event_param_traits.h

Index: components/mus/common/event_param_traits.h
diff --git a/components/mus/common/event_param_traits.h b/components/mus/common/event_param_traits.h
index c7702d9e7137caad0f5338e3b1038b8e9e0aa932..5ed87596bb52d0a3ff721ed7af5592ba752a61b0 100644
--- a/components/mus/common/event_param_traits.h
+++ b/components/mus/common/event_param_traits.h
@@ -43,23 +43,23 @@ struct MUS_COMMON_EXPORT ParamTraits<ui::ScopedEvent> {
   static void Log(const param_type& p, std::string* l);
 
   static void SizeEvent(ui::EventType type,
-                        base::TimeDelta time_stamp,
+                        base::TimeTicks time_stamp,
                         int flags,
                         base::PickleSizer* s,
                         const ui::ScopedEvent& p);
   static void WriteEvent(ui::EventType type,
-                         base::TimeDelta time_stamp,
+                         base::TimeTicks time_stamp,
                          int flags,
                          base::Pickle* m,
                          const ui::ScopedEvent& p);
   static bool ReadEvent(ui::EventType type,
-                        base::TimeDelta time_stamp,
+                        base::TimeTicks time_stamp,
                         int flags,
                         const base::Pickle* m,
                         base::PickleIterator* iter,
                         ui::ScopedEvent* p);
   static void LogEvent(ui::EventType type,
-                       base::TimeDelta time_stamp,
+                       base::TimeTicks time_stamp,
                        int flags,
                        const ui::ScopedEvent& p,
                        std::string* l);