Add in the getCacheQuotaBytes method to wrapper.

Bug: 62623731
Test: Settings Unit Test
Change-Id: Ibd779c7d9e60c44440483489b231ba0715321bc1

packages/SettingsLib/src/com/android/settingslib/applications/StorageStatsSource.java

@@ -54,6 +54,10 @@ public class StorageStatsSource {
                 mStorageStatsManager.queryStatsForPackage(volumeUuid, packageName, user));
     }
 
+    public long getCacheQuotaBytes(String volumeUuid, int uid) {
+        return mStorageStatsManager.getCacheQuotaBytes(volumeUuid, uid);
+    }
+
     /**
      * Static class that provides methods for querying the amount of external storage available as
      * well as breaking it up into several media types.