Fixed the tilt watchface left/right reversal.

Fixed a reversed sign in the tilt watchface that cause the minute
and hour hands to be left/right inverted.

Bug: 21732906
Change-Id: I174fabf006b793c907817ea0469050aa02b352f8
diff --git a/wearable/wear/WatchFace/Wearable/src/main/java/com/example/android/wearable/watchface/TiltWatchFaceService.java b/wearable/wear/WatchFace/Wearable/src/main/java/com/example/android/wearable/watchface/TiltWatchFaceService.java
index ffb0b6c..879473c 100644
--- a/wearable/wear/WatchFace/Wearable/src/main/java/com/example/android/wearable/watchface/TiltWatchFaceService.java
+++ b/wearable/wear/WatchFace/Wearable/src/main/java/com/example/android/wearable/watchface/TiltWatchFaceService.java
@@ -45,7 +45,7 @@
     private static final long FPS = 60;
 
     /** Z distance from the camera to the watchface. */
-    private static final float EYE_Z = 2.3f;
+    private static final float EYE_Z = -2.3f;
 
     /** How long each frame is displayed at expected frame rate. */
     private static final long FRAME_PERIOD_MS = TimeUnit.SECONDS.toMillis(1) / FPS;