Bring back the sensing alarm.  We need it!

Change-Id: I9f42dc19b99b7550189449d0a5100caa140810c1
diff --git a/services/core/java/com/android/server/DeviceIdleController.java b/services/core/java/com/android/server/DeviceIdleController.java
index 496e4df..927b995 100644
--- a/services/core/java/com/android/server/DeviceIdleController.java
+++ b/services/core/java/com/android/server/DeviceIdleController.java
@@ -1500,7 +1500,7 @@
                 mState = STATE_SENSING;
                 if (DEBUG) Slog.d(TAG, "Moved from STATE_IDLE_PENDING to STATE_SENSING.");
                 EventLogTags.writeDeviceIdle(mState, "step");
-                cancelAlarmLocked();
+                scheduleAlarmLocked(mConstants.SENSING_TIMEOUT, false);
                 cancelLocatingLocked();
                 mAnyMotionDetector.checkForAnyMotion();
                 mNotMoving = false;