DO NOT MERGE Disable changing lock when device is not provisioned.

When the device is not yet provisioned and settings is launched:
- disable the entry point for changing device lock
- remove the search panel from settings home page

Bug: 110034419
Test: make RunSettingsRoboTests
Change-Id: Ieb7eb0e8699229ec0824ccc19d7b958ac44965a2

src/com/android/settings/ChooseLockGeneric.java

@@ -133,6 +133,11 @@ public class ChooseLockGeneric extends SettingsActivity {
         @Override
         public void onCreate(Bundle savedInstanceState) {
             super.onCreate(savedInstanceState);
+            final Activity activity = getActivity();
+            if (!Utils.isDeviceProvisioned(activity) && !canRunBeforeDeviceProvisioned()) {
+                activity.finish();
+                return;
+            }
 
             mFingerprintManager =
                 (FingerprintManager) getActivity().getSystemService(Context.FINGERPRINT_SERVICE);
@@ -216,6 +221,10 @@ public class ChooseLockGeneric extends SettingsActivity {
             addHeaderView();
         }
 
+        protected boolean canRunBeforeDeviceProvisioned() {
+            return false;
+        }
+
         protected void addHeaderView() {
             if (mForFingerprint) {
                 setHeaderView(R.layout.choose_lock_generic_fingerprint_header);