fix quick unlock config in options

chrome/browser/resources/settings/people_page/lock_screen.js

Index: chrome/browser/resources/settings/people_page/lock_screen.js
diff --git a/chrome/browser/resources/settings/people_page/lock_screen.js b/chrome/browser/resources/settings/people_page/lock_screen.js
index a4eab35b27b04407b10992af5fab07070d7c0660..636a445b0996c78636307c726574fed440465e0e 100644
--- a/chrome/browser/resources/settings/people_page/lock_screen.js
+++ b/chrome/browser/resources/settings/people_page/lock_screen.js
@@ -92,8 +92,8 @@ Polymer({
     // currentRouteChanged is not called during the initial navigation. If the
     // user navigates directly to the lockScreen page, we still want to show the
     // password prompt page.
-    this.currentRouteChanged(settings.Route.LOCK_SCREEN,
-        settings.Route.LOCK_SCREEN);
+    this.currentRouteChanged(settings.getCurrentRoute(),
+        settings.getCurrentRoute());

[Dan Beam, 2017/02/17 02:45:17]

say whattttt?

[xiaoyinh(OOO Sep 11-29), 2017/02/17 19:33:46]

I'm not sure why we want to explicitly set the route "LOCK_SCREEN" when the
element is attached.
In other places, it seems to use navigateTo to change route.

This change should not impact settings functionality though, if I understand it
correctly, there're 2 ways to navigate to lock screen page:

1. Navigate from people page:
It will setCurrentRoute to LOCK_SCREEN in people_page.js by using
settings.navigateTo(settings.Route.LOCK_SCREEN);

2. Navigate to lockscreen directly by using chrome://md-settings/lockScreen.
route.js will call initializeRouteFromUrl and set the current route to
LOCK_SCREEN.

Either way, the currentRoute is set to LOCK_SCREEN before calling attached().

The change is mainly for options page, because we want to pre-load the lock
screen element now, the attached function will get called even though the quick
unlock overlay is still hidden, setting the route to LOCK_SCREEN will open a
(hidden)password dialog before we want to configure the pin in options. 

     this.browserProxy_ = settings.FingerprintBrowserProxyImpl.getInstance();
   },