profcollect: Change dex2oat callback to use Runnable::run

Addresses follow up review in https://r.android.com/2909917

Change-Id: Idc979c73b05e5dee53ef756b392c20131e2cdb4b
Test: presubmit
diff --git a/services/profcollect/src/com/android/server/profcollect/ProfcollectForwardingService.java b/services/profcollect/src/com/android/server/profcollect/ProfcollectForwardingService.java
index fb0fbe8..823267c 100644
--- a/services/profcollect/src/com/android/server/profcollect/ProfcollectForwardingService.java
+++ b/services/profcollect/src/com/android/server/profcollect/ProfcollectForwardingService.java
@@ -49,7 +49,6 @@
 import com.android.server.wm.ActivityMetricsLaunchObserverRegistry;
 import com.android.server.wm.ActivityTaskManagerInternal;
 
-import java.util.concurrent.ForkJoinPool;
 import java.util.concurrent.ThreadLocalRandom;
 import java.util.concurrent.TimeUnit;
 
@@ -314,7 +313,7 @@
             Log.w(LOG_TAG, "Couldn't get ArtManagerLocal");
             return;
         }
-        aml.setBatchDexoptStartCallback(ForkJoinPool.commonPool(),
+        aml.setBatchDexoptStartCallback(Runnable::run,
                 (snapshot, reason, defaultPackages, builder, passedSignal) -> {
                     traceOnDex2oatStart();
                 });