Add restricted padlock support for listpreference.

Change-Id: I1f3284a474d225df803abd57dd71382cb1dfa659
diff --git a/res/xml/display_settings.xml b/res/xml/display_settings.xml
index 0456ace..1780765 100644
--- a/res/xml/display_settings.xml
+++ b/res/xml/display_settings.xml
@@ -49,7 +49,7 @@
                 settings:keywords="@string/keywords_display_wallpaper"
                 android:fragment="com.android.settings.WallpaperTypeSettings" />
 
-        <ListPreference
+        <com.android.settings.RestrictedListPreference
                 android:key="screen_timeout"
                 android:title="@string/screen_timeout"
                 android:summary="@string/screen_timeout_summary"
diff --git a/res/xml/security_settings_password.xml b/res/xml/security_settings_password.xml
index b610562..a6fe1a4 100644
--- a/res/xml/security_settings_password.xml
+++ b/res/xml/security_settings_password.xml
@@ -29,7 +29,7 @@
             settings:keywords="@string/keywords_lockscreen"
             android:persistent="false"/>
 
-        <ListPreference
+        <com.android.settings.RestrictedListPreference
             android:key="lock_after_timeout"
             android:title="@string/lock_after_timeout"
             android:summary="@string/lock_after_timeout_summary"
diff --git a/res/xml/security_settings_pattern.xml b/res/xml/security_settings_pattern.xml
index 867bed4..f8c4bd9 100644
--- a/res/xml/security_settings_pattern.xml
+++ b/res/xml/security_settings_pattern.xml
@@ -33,7 +33,7 @@
             android:key="visiblepattern"
             android:title="@string/lockpattern_settings_enable_visible_pattern_title"/>
 
-        <ListPreference
+        <com.android.settings.RestrictedListPreference
             android:key="lock_after_timeout"
             android:title="@string/lock_after_timeout"
             android:summary="@string/lock_after_timeout_summary"
diff --git a/res/xml/security_settings_pin.xml b/res/xml/security_settings_pin.xml
index ac09a2c..abab140 100644
--- a/res/xml/security_settings_pin.xml
+++ b/res/xml/security_settings_pin.xml
@@ -29,7 +29,7 @@
             settings:keywords="@string/keywords_lockscreen"
             android:persistent="false"/>
 
-        <ListPreference
+        <com.android.settings.RestrictedListPreference
             android:key="lock_after_timeout"
             android:title="@string/lock_after_timeout"
             android:summary="@string/lock_after_timeout_summary"