Revert of Revert "cc: Make scheduler run incoming frame after previous deadline."

cc/scheduler/begin_frame_tracker.cc

Index: cc/scheduler/begin_frame_tracker.cc
diff --git a/cc/scheduler/begin_frame_tracker.cc b/cc/scheduler/begin_frame_tracker.cc
index fb39ee1eb1d09decfa660336b9faada05710a76c..b7c63e6cf6c031a224bbfc8ec932cef6f5e5dc21 100644
--- a/cc/scheduler/begin_frame_tracker.cc
+++ b/cc/scheduler/begin_frame_tracker.cc
@@ -78,7 +78,6 @@
 }
 
 void BeginFrameTracker::AsValueInto(
-    base::TimeTicks now,
     base::trace_event::TracedValue* state) const {
   state->SetDouble("updated_at_ms",
                    (current_updated_at_ - base::TimeTicks()).InMillisecondsF());
@@ -95,6 +94,7 @@
   current_args_.AsValueInto(state);
   state->EndDictionary();
 
+  base::TimeTicks now = base::TimeTicks::Now();
   base::TimeTicks frame_time = current_args_.frame_time;
   base::TimeTicks deadline = current_args_.deadline;
   base::TimeDelta interval = current_args_.interval;