Clean up settings_entity_header layout.

update layout view IDs, and controller variable names to be more
generic.

Fix: 36734470
Bug: 37669238
Test: make RunSettingsRoboTests
Change-Id: Ib80827ae3eae6d01a600068b4a8a44b239c32511
diff --git a/res/xml/development_prefs.xml b/res/xml/development_prefs.xml
index 1eea8dd..273b80d 100644
--- a/res/xml/development_prefs.xml
+++ b/res/xml/development_prefs.xml
@@ -412,12 +412,12 @@
             android:entries="@array/app_process_limit_entries"
             android:entryValues="@array/app_process_limit_values" />
 
-        <!-- hiding for now.
+
         <Preference
                 android:key="background_check"
                 android:fragment="com.android.settings.applications.BackgroundCheckSummary"
                 android:title="@string/background_check_pref" />
-        -->
+
 
         <SwitchPreference
             android:key="show_all_anrs"