Add Settings#ACTION_NIGHT_DISPLAY_SETTINGS

- The ACTION_NIGHT_DISPLAY_SETTINGS action can be used to launch
  Night display settings directly.
- Updated NightDisplayTile to use ACTION_NIGHT_DISPLAY_SETTINGS.

Bug: 30291948
Change-Id: I6d912cf481f72ef5b52f53fa23942071fc795452

core/java/android/provider/Settings.java

@@ -439,6 +439,22 @@ public final class Settings {
     public static final String ACTION_DISPLAY_SETTINGS =
             "android.settings.DISPLAY_SETTINGS";
 
+    /**
+     * Activity Action: Show settings to allow configuration of Night display.
+     * <p>
+     * In some cases, a matching Activity may not exist, so ensure you
+     * safeguard against this.
+     * <p>
+     * Input: Nothing.
+     * <p>
+     * Output: Nothing.
+     *
+     * @hide
+     */
+    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String ACTION_NIGHT_DISPLAY_SETTINGS =
+            "android.settings.NIGHT_DISPLAY_SETTINGS";
+
     /**
      * Activity Action: Show settings to allow configuration of locale.
      * <p>

packages/SystemUI/src/com/android/systemui/qs/tiles/NightDisplayTile.java

@@ -74,7 +74,7 @@ public class NightDisplayTile extends QSTile<QSTile.BooleanState>
 
     @Override
     public Intent getLongClickIntent() {
-        return new Intent(Settings.ACTION_DISPLAY_SETTINGS);
+        return new Intent(Settings.ACTION_NIGHT_DISPLAY_SETTINGS);
     }
 
     @Override