Small fixes for the lock screen md-settings page.

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

Index: chrome/browser/resources/settings/people_page/password_prompt_dialog.js
diff --git a/chrome/browser/resources/settings/people_page/password_prompt_dialog.js b/chrome/browser/resources/settings/people_page/password_prompt_dialog.js
index 944be300729a55d39fbc942c1d744a90b2e80790..71e9c7094b3bfc81062df273ad0458e91e91e9a9 100644
--- a/chrome/browser/resources/settings/people_page/password_prompt_dialog.js
+++ b/chrome/browser/resources/settings/people_page/password_prompt_dialog.js
@@ -90,25 +90,24 @@ Polymer({
       return;
     }
 
+    if (this.$.dialog.open)
+      return;
+
     this.$.dialog.showModal();
   },
 
-  /** Close the dialog. */
-  close: function() {
+  /** @private */
+  onCancelTap_: function() {
     if (this.$.dialog.open)
       this.$.dialog.close();
 
     this.password_ = '';
   },
 
-  /** Cancel the password prompt. */
-  cancel: function() {
-    if (this.$.dialog.open)
-      this.$.dialog.cancel();
-
-    // We bind setModes_ in an on-change event, so when the user hits cancel
-    // after they enter their valid password we may have authenticated them.
-    this.setModes_ = undefined;
+  /** @private */
+  onKeydown_: function(e) {
+    if (e.key == 'Enter')
+      this.checkPassword_();
   },
 
   /**
@@ -150,7 +149,7 @@ Polymer({
 
         this.clearAccountPasswordTimeout_ = setTimeout(
           clearSetModes.bind(this), PASSWORD_ACTIVE_DURATION_MS);
-        this.close();
+        this.$.dialog.close();

[tommycli, 2016/08/25 23:34:25]

You no longer wish to clear the password_ member variable here?

[jdufault, 2016/08/25 23:45:39]

Added clarifying comment.

       }
     }