Refactor passwords/pins/patterns to byte[]

Relating to packages/apps/Settings

Bug: 120484642
Test: manual - test setting and unlocking passwords/pins/patterns.
      automated - 20 of about 500 tests fail due to fragile synthetic
      password test code.

Change-Id: Idec8338d141c185bef67ade12035fdb2fa9d17ea

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

@@ -59,7 +59,7 @@ public class ManagedLockPasswordProvider {
      * @param password Current lock password.
      * @return Intent that should update lock password to a managed password.
      */
-    Intent createIntent(boolean requirePasswordToDecrypt, String password) {
+    Intent createIntent(boolean requirePasswordToDecrypt, byte[] password) {
         return null;
     }
 }