Don't show Restrictions item if it has been disabled for the user.

Also don't show actual Restrictions content if the fragment was launched
through a different entry point.

Change-Id: I70cb76ca6f68a382e68219053e6f69e7f1fa0150

src/com/android/settings/Settings.java

@@ -488,7 +488,8 @@ public class Settings extends PreferenceActivity
                     target.remove(i);
                 }
             } else if (id == R.id.restriction_settings) {
-                if (um.isLinkedUser()) {
+                if (um.isLinkedUser()
+                        || um.hasUserRestriction(UserManager.DISALLOW_APP_RESTRICTIONS)) {
                     target.remove(i);
                 }
             }

src/com/android/settings/users/RestrictionSettings.java

@@ -46,10 +46,15 @@ public class RestrictionSettings extends AppRestrictionsFragment {
 
     private boolean mChallengeSucceeded;
     private boolean mChallengeRequested;
+    private boolean mDisableSelf;
 
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
-
+        if (UserManager.get(getActivity()).hasUserRestriction(
+                UserManager.DISALLOW_APP_RESTRICTIONS)) {
+            mDisableSelf = true;
+            return;
+        }
         init(icicle);
         if (icicle != null) {
             mChallengeSucceeded = icicle.getBoolean(KEY_CHALLENGE_SUCCEEDED, false);
@@ -60,8 +65,10 @@ public class RestrictionSettings extends AppRestrictionsFragment {
 
     public void onResume() {
         super.onResume();
+        if (!mDisableSelf) {
             ensurePin();
         }
+    }
 
     private void ensurePin() {
         if (!mChallengeSucceeded) {
@@ -122,9 +129,10 @@ public class RestrictionSettings extends AppRestrictionsFragment {
 
     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
+        if (!mDisableSelf) {
             menu.add(0, MENU_RESET, 0, R.string.restriction_menu_reset);
             menu.add(0, MENU_CHANGE_PIN, 0, R.string.restriction_menu_change_pin);
-
+        }
         super.onCreateOptionsMenu(menu, inflater);
     }