MD Settings: Users: Focus dialog buttons on close

chrome/browser/resources/settings/people_page/fingerprint_list.html

 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/web_ui_listener_behavior.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-icon/iron-icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/iron-list/iron-list.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-ripple/paper-ripple.html">
 <link rel="import" href="fingerprint_browser_proxy.html">
@@ skipping 41 matching lines @@
                 on-change="onFingerprintLabelChanged_">
             </paper-input>
             <button is="paper-icon-button-light"
                 on-tap="onFingerprintDeleteTapped_">
               <iron-icon icon="cr:delete"></iron-icon>
             </button>
           </div>
         </template>
       </iron-list>
       <div class="continuation">
-        <paper-button class="add-link action-button"
+        <paper-button id="addFingerprint" class="add-link action-button"
             on-tap="openAddFingerprintDialog_">
           $i18n{lockScreenAddFingerprint}
         </paper-button>
       </div>
     </div>
     <i class="settings-box continuation">$i18n{lockScreenFingerprintWarning}</i>

[dpapad, 2017/04/13 17:56:32]

Drive-by comment (ignore for this CL): <i> is a fairly old HTML element, and is
not necessary anymore. Instead CSS "font-style: italic;" is preferred (in the
spirit of "CSS should define style, HTML should define content").

[stevenjb, 2017/04/13 18:02:09]

Acknowledged.

 
     <settings-setup-fingerprint-dialog id="setupFingerprint"
-        on-add-fingerprint="updateFingerprintsList_">
+        on-add-fingerprint="updateFingerprintsList_"
+        on-close="onAddFingerprintDialogClose_">

[dpapad, 2017/04/13 17:56:32]

Nit (optional): Maybe rename to onSetupFingerprintDialogClose_ since the dialog
is named "setup-fingerprint-dialog".

[stevenjb, 2017/04/13 18:02:09]

Done.

     </settings-setup-fingerprint-dialog>
   </template>
   <script src="fingerprint_list.js"></script>
 </dom-module>