Entity header: When screen scrolls, there should be shadow under the header.

Bug: 70950124

Test: manual
Test: make RunSettingsRoboTests

Change-Id: I5c1d9f463a57d48e258d67602fc4d1fbbdfaad60

src/com/android/settings/datausage/DataUsageSummary.java

@@ -161,7 +161,7 @@ public class DataUsageSummary extends DataUsageBaseFragment implements Indexable
         final Activity activity = getActivity();
         final ArrayList<AbstractPreferenceController> controllers = new ArrayList<>();
         mSummaryController =
-                new DataUsageSummaryPreferenceController(context, this, activity);
+                new DataUsageSummaryPreferenceController(activity, getLifecycle(), this);
         controllers.add(mSummaryController);
         getLifecycle().addObserver(mSummaryController);
         return controllers;