Fix scheduler bug in skipping main frames

cc/scheduler/scheduler.cc

Index: cc/scheduler/scheduler.cc
diff --git a/cc/scheduler/scheduler.cc b/cc/scheduler/scheduler.cc
index 52aa2bb7e66cd589623f3bc6c3ce2189ff019241..41bd1f9ee5310e212f1d65d473a8a98cb402fb52 100644
--- a/cc/scheduler/scheduler.cc
+++ b/cc/scheduler/scheduler.cc
@@ -742,8 +742,7 @@ bool Scheduler::CanBeginMainFrameAndActivateBeforeDeadline(
     base::TimeDelta bmf_to_activate_estimate) const {
   // Check if the main thread computation and commit can be finished before the
   // impl thread's deadline.
-  base::TimeTicks estimated_draw_time =
-      args.frame_time + bmf_to_activate_estimate;
+  base::TimeTicks estimated_draw_time = Now() + bmf_to_activate_estimate;
 
   return estimated_draw_time < args.deadline;
 }