Don't require apps to call showLights to use default lights.

Bug: 26810573
Change-Id: I431a1a18e32c616238e763b401b5f6b14131fd89
diff --git a/core/java/android/app/Notification.java b/core/java/android/app/Notification.java
index 7f037f2..34c90c1 100644
--- a/core/java/android/app/Notification.java
+++ b/core/java/android/app/Notification.java
@@ -2623,9 +2623,6 @@
             if (onMs != 0 || offMs != 0) {
                 mN.flags |= FLAG_SHOW_LIGHTS;
             }
-            if ((mN.defaults & DEFAULT_LIGHTS) != 0) {
-                mN.flags |= FLAG_SHOW_LIGHTS;
-            }
             return this;
         }
 
@@ -3603,6 +3600,10 @@
                 mStyle.buildStyled(mN);
             }
 
+            if ((mN.defaults & DEFAULT_LIGHTS) != 0) {
+                mN.flags |= FLAG_SHOW_LIGHTS;
+            }
+
             return mN;
         }