Update the summary strings in the Deletion Helper to match the latest mocks.

Bug: 28917902
Change-Id: I35af7483f2a97dffc230093a90f0b7d87a4532c1

src/com/android/settings/deletionhelper/AppStateUsageStatsBridge.java

@@ -41,6 +41,7 @@ public class AppStateUsageStatsBridge extends AppStateBaseBridge {
     private PackageManager mPm;
     public static final long NEVER_USED = -1;
     public static final long UNKNOWN_LAST_USE = -2;
+    public static final long UNUSED_DAYS_DELETION_THRESHOLD = 60;
 
     public AppStateUsageStatsBridge(Context context, ApplicationsState appState,
                                     Callback callback) {
@@ -105,7 +106,6 @@ public class AppStateUsageStatsBridge extends AppStateBaseBridge {
      * usage is unknown, it is skipped.
      */
     public static final AppFilter FILTER_USAGE_STATS = new AppFilter() {
-        private long UNUSED_DAYS_DELETION_THRESHOLD = 60;
 
         @Override
         public void init() {

src/com/android/settings/deletionhelper/DeletionHelperFragment.java

@@ -394,7 +394,8 @@ public class DeletionHelperFragment extends SettingsPreferenceFragment implement
                     mAppEntries.size()));
             mApps.setSummary(app.getString(R.string.deletion_helper_apps_group_summary,
                     Formatter.formatFileSize(app,
-                            getTotalAppsFreeableSpace(true))));
+                            getTotalAppsFreeableSpace(true)),
+                    AppStateUsageStatsBridge.UNUSED_DAYS_DELETION_THRESHOLD));
         }
     }