MD Settings: Listen to the Enter key in the Add User ChromeOS dialog.

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

Index: chrome/browser/resources/settings/people_page/users_add_user_dialog.html
diff --git a/chrome/browser/resources/settings/people_page/users_add_user_dialog.html b/chrome/browser/resources/settings/people_page/users_add_user_dialog.html
index cc2180c3f442f8d48fa9862852ee8b7cd273f84c..295f1aa24ae89ad04bf6ea13654cc711badc4bff 100644
--- a/chrome/browser/resources/settings/people_page/users_add_user_dialog.html
+++ b/chrome/browser/resources/settings/people_page/users_add_user_dialog.html
@@ -1,6 +1,7 @@
 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
+<link rel="import" href="chrome://resources/polymer/v1_0/iron-a11y-keys/iron-a11y-keys.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="/settings_shared_css.html">
@@ -21,6 +22,8 @@
       <div class="body">
         <paper-input id="addUserInput" label="$i18n{addUsersEmail}" autofocus
             on-input="validate_">
+          <iron-a11y-keys id="keys" keys="enter" on-keys-pressed="addUser_">
+          </iron-a11y-keys>
         </paper-input>
       </div>
       <div class="button-container">