Include input discovery time in the execution graph.
The CriticalPathComputer includes it as parse time, but here, we can add another field.
@@ -79,6 +79,7 @@ message Metrics {
int32 setup_millis = 8;
int32 process_outputs_millis = 9;
int32 queue_millis = 10;
+ int32 discover_inputs_millis = 14;
// Total time spent on failed attempts.
int32 retry_millis = 11;
