Add people signals to Zen mode.

Depends-On: I51fcf689ddbee7715e3387b865f18a715887c943
Change-Id: I7c91dec1afeb54505426c4da59ec4d072a60c240
diff --git a/services/core/java/com/android/server/notification/ValidateNotificationPeople.java b/services/core/java/com/android/server/notification/ValidateNotificationPeople.java
index 14be9b2..02f95e9 100644
--- a/services/core/java/com/android/server/notification/ValidateNotificationPeople.java
+++ b/services/core/java/com/android/server/notification/ValidateNotificationPeople.java
@@ -47,9 +47,20 @@
     private static final int MAX_PEOPLE = 10;
     private static final int PEOPLE_CACHE_SIZE = 200;
 
-    private static final float NONE = 0f;
-    private static final float VALID_CONTACT = 0.5f;
-    private static final float STARRED_CONTACT = 1f;
+    /** Indicates that the notification does not reference any valid contacts. */
+    static final float NONE = 0f;
+
+    /**
+     * Affinity will be equal to or greater than this value on notifications
+     * that reference a valid contact.
+     */
+    static final float VALID_CONTACT = 0.5f;
+
+    /**
+     * Affinity will be equal to or greater than this value on notifications
+     * that reference a starred contact.
+     */
+    static final float STARRED_CONTACT = 1f;
 
     protected boolean mEnabled;
     private Context mContext;