Move ACTION_AMBIENT_DISPLAY from O to N-MR1 constant.

Changed the constant value from 513 to 495.

Bug: 29994493
Change-Id: I0f163f40fb63aef1047885b756bbf68c49a9b022
diff --git a/proto/src/metrics_constants.proto b/proto/src/metrics_constants.proto
index f5dfa69..29d1e7a 100644
--- a/proto/src/metrics_constants.proto
+++ b/proto/src/metrics_constants.proto
@@ -2203,6 +2203,10 @@
     // System navigation key down.
     ACTION_SYSTEM_NAVIGATION_KEY_DOWN = 494;
 
+    // OPEN: Settings > Display -> Ambient Display
+    // CATEGORY: SETTINGS
+    ACTION_AMBIENT_DISPLAY = 495;
+
     // ---- End N-MR1 Constants, all N-MR1 constants go above this line ----
 
     // ------- Begin N Keyboard Shortcuts Helper -----
@@ -2262,10 +2266,6 @@
     // Package: Package of print service
     ACTION_PRINT_RECOMMENDED_SERVICE_INSTALL = 512;
 
-    // OPEN: Settings > Display -> Ambient Display
-    // CATEGORY: SETTINGS
-    ACTION_AMBIENT_DISPLAY = 513;
-
     // ---- End O Constants, all O constants go above this line ----
 
     // Add new aosp constants above this line.