Move SharedPreferences code to its own class.

Bug: 251502424
Test: Code compiled correctly.
Change-Id: Iea0d6ab2999504117546ee0f7adc0c7b8b45c065
diff --git a/src/com/android/launcher3/SessionCommitReceiver.java b/src/com/android/launcher3/SessionCommitReceiver.java
index bcd4c3f..50ad2be 100644
--- a/src/com/android/launcher3/SessionCommitReceiver.java
+++ b/src/com/android/launcher3/SessionCommitReceiver.java
@@ -98,6 +98,6 @@
     }
 
     public static boolean isEnabled(Context context) {
-        return Utilities.getPrefs(context).getBoolean(ADD_ICON_PREFERENCE_KEY, true);
+        return LauncherPrefs.getPrefs(context).getBoolean(ADD_ICON_PREFERENCE_KEY, true);
     }
 }