Block developer settings during SUW

Block access to development settings by tapping on the build number
in "About phone". Once SUW has completed, taps will be allowed.

Bug: 25290269
Change-Id: I9b2787712237f28fba446abab15a9e1c075d0419

src/com/android/settings/DevelopmentSettings.java

@@ -259,7 +259,11 @@ public class DevelopmentSettings extends SettingsPreferenceFragment
         mWifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
 
         if (android.os.Process.myUserHandle().getIdentifier() != UserHandle.USER_OWNER
-                || mUm.hasUserRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES)) {
+                || mUm.hasUserRestriction(UserManager.DISALLOW_DEBUGGING_FEATURES)
+                || Settings.Global.getInt(getActivity().getContentResolver(),
+                        Settings.Global.DEVICE_PROVISIONED, 0) == 0) {
+            // Block access to developer options if the user is not the owner, if user policy
+            // restricts it, or if the device has not been provisioned
             mUnavailable = true;
             setPreferenceScreen(new PreferenceScreen(getActivity(), null));
             return;