Fix ConfirmDeviceCredentials for work profiles

1) Fixed the theme for CDCA$InternalActivity to be transparent
2) CDCA only cares about biometrics, which are tied to userId
3) Moved shared methods to a util class

Fixes: 119296586

Test: Followed the steps in comment#1 of the bug linked above


Change-Id: Ie47fc7c3a53dfb7780087937e1ca83287cc52d71

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

@@ -434,10 +434,11 @@ public class ConfirmLockPassword extends ConfirmDeviceCredentialBaseActivity {
             mPasswordEntryInputDisabler.setInputEnabled(true);
             if (matched) {
                 if (newResult) {
-                    reportSuccessfulAttempt();
+                    ConfirmDeviceCredentialUtils.reportSuccessfulAttempt(mLockPatternUtils,
+                            mUserManager, mEffectiveUserId);
                 }
                 startDisappearAnimation(intent);
-                checkForPendingIntent();
+                ConfirmDeviceCredentialUtils.checkForPendingIntent(getActivity());
             } else {
                 if (timeoutMs > 0) {
                     refreshLockScreen();