Update confirm device credentials to spec, add fingerprint

- New strings in the screen.
- New layout/style.
- Clean up internal API's around it.
- Add fingerprint support if launched from externally
- Separate theme if launched from externally
- If launched from above Keyguard, use SHOW_WHEN_LOCKED flag

Change-Id: Icdf9bf9e0506841f24e8aab5f0f1d1f4b688951f

src/com/android/settings/SecuritySettings.java

@@ -603,8 +603,9 @@ public class SecuritySettings extends SettingsPreferenceFragment
             ChooseLockSettingsHelper helper =
                     new ChooseLockSettingsHelper(this.getActivity(), this);
             mTrustAgentClickIntent = preference.getIntent();
-            if (!helper.launchConfirmationActivity(CHANGE_TRUST_AGENT_SETTINGS, null, null) &&
-                    mTrustAgentClickIntent != null) {
+            boolean confirmationLaunched = helper.launchConfirmationActivity(
+                    CHANGE_TRUST_AGENT_SETTINGS, preference.getTitle());
+            if (!confirmationLaunched&&  mTrustAgentClickIntent != null) {
                 // If this returns false, it means no password confirmation is required.
                 startActivity(mTrustAgentClickIntent);
                 mTrustAgentClickIntent = null;