Fix search always navigating to quick unlock authenticate screen.

BUG=629598
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2160423002
Cr-Commit-Position: refs/heads/master@{#406617}

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

@@ -79,7 +79,8 @@ Polymer({
     chrome.quickUnlockPrivate.onActiveModesChanged.addListener(
         this.boundOnActiveModesChanged_);
 
-    this.askForPasswordIfUnset();
+    if (this.isScreenActive(QuickUnlockScreen.CHOOSE_METHOD))
+      this.askForPasswordIfUnset();
   },
 
   /** @override */

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

@@ -104,7 +104,9 @@ Polymer({
   /** @override */
   attached: function() {
     this.resetState_();
-    this.askForPasswordIfUnset();
+
+    if (this.isScreenActive(QuickUnlockScreen.SETUP_PIN))
+      this.askForPasswordIfUnset();
   },
 
   /**