Settings Fragment Migration (Build pass app)

This patch focused on fixing compile errors and some runtime errors.

Test: We can't test it now. But we will have an integration test later.
Bug: 110259478
Change-Id: I16c471ddcd0fa1460c665b7f74d86fcace5ee67b

src/com/android/settings/password/ConfirmLockPassword.java

@@ -85,7 +85,7 @@ public class ConfirmLockPassword extends ConfirmDeviceCredentialBaseActivity {
     @Override
     public void onWindowFocusChanged(boolean hasFocus) {
         super.onWindowFocusChanged(hasFocus);
-        Fragment fragment = getFragmentManager().findFragmentById(R.id.main_content);
+        Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.main_content);
         if (fragment != null && fragment instanceof ConfirmLockPasswordFragment) {
             ((ConfirmLockPasswordFragment)fragment).onWindowFocusChanged(hasFocus);
         }