Only check isTopOfTask() when needed

This avoids unnecessary binder call to system
Test: Verified on device

Change-Id: I5258550c8fbe837acc93e89f21a44464a00c7d6e

core/java/android/app/Activity.java

@@ -1768,7 +1768,7 @@ public class Activity extends ContextThemeWrapper
     protected void onResume() {
         if (DEBUG_LIFECYCLE) Slog.v(TAG, "onResume " + this);
         dispatchActivityResumed();
-        mActivityTransitionState.onResume(this, isTopOfTask());
+        mActivityTransitionState.onResume(this);
         enableAutofillCompatibilityIfNeeded();
         if (mAutoFillResetNeeded) {
             if (!mAutoFillIgnoreFirstResumePause) {

core/java/android/app/ActivityTransitionState.java

@@ -258,10 +258,10 @@ class ActivityTransitionState {
         }
     }
 
-    public void onResume(Activity activity, boolean isTopOfTask) {
+    public void onResume(Activity activity) {
         // After orientation change, the onResume can come in before the top Activity has
         // left, so if the Activity is not top, wait a second for the top Activity to exit.
-        if (isTopOfTask || mEnterTransitionCoordinator == null) {
+        if (mEnterTransitionCoordinator == null || activity.isTopOfTask()) {
             restoreExitedViews();
             restoreReenteringViews();
         } else {