Merge "Do not call checkReadyForSleep recursively." into pi-dev

            // Protect against recursion.

            mStackSupervisor.inResumeTopActivity = true;

            result = resumeTopActivityInnerLocked(prev, options);

        } finally {

            mStackSupervisor.inResumeTopActivity = false;

        }

            // When resuming the top activity, it may be necessary to pause the top activity (for

            // example, returning to the lock screen. We suppress the normal pause logic in

        // {@link #resumeTopActivityUncheckedLocked}, since the top activity is resumed at the end.

        // We call the {@link ActivityStackSupervisor#checkReadyForSleepLocked} again here to ensure

        // any necessary pause logic occurs. In the case where the Activity will be shown regardless

        // of the lock screen, the call to {@link ActivityStackSupervisor#checkReadyForSleepLocked}

        // is skipped.

            // {@link #resumeTopActivityUncheckedLocked}, since the top activity is resumed at the

            // end. We call the {@link ActivityStackSupervisor#checkReadyForSleepLocked} again here

            // to ensure any necessary pause logic occurs. In the case where the Activity will be

            // shown regardless of the lock screen, the call to

            // {@link ActivityStackSupervisor#checkReadyForSleepLocked} is skipped.

            final ActivityRecord next = topRunningActivityLocked(true /* focusableOnly */);

            if (next == null || !next.canTurnScreenOn()) {

                checkReadyForSleep();

            }

        } finally {

            mStackSupervisor.inResumeTopActivity = false;

        }

        return result;

    }