Adding comments and removes unnecessary parameter

Bug: 227538244
Test: atest ActivityVisibilityTests
Change-Id: I90c7f82decbed75bccc5c750ba2c84e948cc33c3

services/core/java/com/android/server/wm/ActivityRecord.java

@@ -5649,7 +5649,7 @@ final class ActivityRecord extends WindowToken implements WindowManagerService.A
         ProtoLog.v(WM_DEBUG_ADD_REMOVE, "notifyAppResumed: wasStopped=%b %s",
                 wasStopped, this);
         mAppStopped = false;
-        // Allow the window to turn the screen on once the app is resumed again.
+        // Allow the window to turn the screen on once the app is started and resumed.
         if (mAtmService.getActivityStartController().isInExecution()) {
             setCurrentLaunchCanTurnScreenOn(true);
         }

services/core/java/com/android/server/wm/ActivityStartController.java

@@ -94,6 +94,7 @@ public class ActivityStartController {
 
     boolean mCheckedForSetup = false;
 
+    /** Whether an {@link ActivityStarter} is currently executing (starting an Activity). */
     private boolean mInExecution = false;
 
     /**
@@ -129,7 +130,7 @@ public class ActivityStartController {
         return mFactory.obtain().setIntent(intent).setReason(reason);
     }
 
-    void onExecutionStarted(ActivityStarter starter) {
+    void onExecutionStarted() {
         mInExecution = true;
     }
 

services/core/java/com/android/server/wm/ActivityStarter.java

@@ -1268,7 +1268,7 @@ class ActivityStarter {
     }
 
     private void onExecutionStarted() {
-        mController.onExecutionStarted(this);
+        mController.onExecutionStarted();
     }
 
     private boolean isHomeApp(int uid, @Nullable String packageName) {