Make --experimental_stats_summary work.

Example:
before:
```
INFO: Elapsed time: 59.600s, Critical Path: 40.58s
INFO: 791 processes: 266 linux-sandbox, 525 worker.
INFO: Build completed successfully, 792 total actions
```

after:
```
INFO: 356 processes: 331 linux-sandbox, 1 local, 24 worker.
INFO: Total action wall time 515.81s
INFO: Critical path 8.91s (setup 0.00s, action wall time 0.00s)
INFO: Elapsed time 23.42s (preparation 13.58s, execution 9.84s)
```

RELNOTES: None

Closes #11553.

PiperOrigin-RevId: 314915775
diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BuildSummaryStatsModule.java b/src/main/java/com/google/devtools/build/lib/runtime/BuildSummaryStatsModule.java
index f3b4bc8..496754e 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BuildSummaryStatsModule.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BuildSummaryStatsModule.java
@@ -80,6 +80,7 @@
   @Override
   public void executorInit(CommandEnvironment env, BuildRequest request, ExecutorBuilder builder) {
     enabled = env.getOptions().getOptions(ExecutionOptions.class).enableCriticalPathProfiling;
+    statsSummary = env.getOptions().getOptions(ExecutionOptions.class).statsSummary;
   }
 
   @Subscribe