WebUI: For cr-dialog, handle Enter keys in paper-inputs.

chrome/browser/resources/settings/passwords_and_forms_page/address_edit_dialog.html

 <link rel="import" href="chrome://resources/cr_elements/cr_dialog/cr_dialog.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_scrollable_behavior.html">
 <link rel="import" href="chrome://resources/html/cr.html">
 <link rel="import" href="chrome://resources/html/i18n_behavior.html">
 <link rel="import" href="chrome://resources/html/md_select_css.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-input/paper-input.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-textarea.html">
 <link rel="import" href="../settings_shared_css.html">
 <link rel="import" href="../settings_vars_css.html">
 
 <dom-module id="settings-address-edit-dialog">
   <template>
     <style include="settings-shared md-select">
       :host {
         --iron-autogrow-textarea: {
@@ skipping 34 matching lines @@
       .long {
         width: var(--paper-input-max-width);
       }
 
       #saveButton {
         -webkit-margin-start: 8px;
       }
 
       #dialog {
         --cr-dialog-body-container: {
-          max-height: 450px; 
+          max-height: 450px;
         };
       }
 
       @media all and (max-height: 714px) {
         #dialog {
           --cr-dialog-body-container: {
-            max-height: 270px; 
+            max-height: 270px;
           };
         }
       }
 
       paper-textarea {
         /**
          * Workaround for iron-autogrow-textarea's display:inline-block creating
          * too much vertical space than intended.
          */
         --layout-relative : {
@@ skipping 13 matching lines @@
                     value="{{item.value}}" on-value-changed="updateCanSave_"
                     class$="address-column [[long_(item)]]" always-float-label
                     autofocus>
                 </paper-textarea>
               </template>
               <template is="dom-if" if="[[!item.isTextArea]]">
                 <paper-input type="text" label="[[item.component.fieldName]]"
                     always-float-label autofocus value="{{item.value}}"
                     on-value-changed="updateCanSave_"
                     class$="address-column [[long_(item)]]">
-                  <iron-a11y-keys keys="enter"
-                      on-keys-pressed="onSaveButtonTap_">
-                  </iron-a11y-keys>
                 </paper-input>
               </template>
             </template>
           </div>
         </template>
         <div id="select-row" class="address-row">
           <div id="select-label">$i18n{addressCountry}</div>
           <span class="md-select-wrapper">
             <select class="md-select address-column long"
                   value="[[countryCode_]]" on-change="onCountryChange_">
               <option value=""></option>
               <template is="dom-repeat" items="[[countries_]]">
                 <option value="[[getCode_(item)]]"
                     disabled="[[isDivision_(item)]]">
                   [[getName_(item)]]
                 </option>
               </template>
             </select>
             <span class="md-select-underline"></span>
           </span>
         </div>
         <div class="address-row">
-          <iron-a11y-keys keys="enter" on-keys-pressed="onSaveButtonTap_">
-          </iron-a11y-keys>
           <paper-input id="phoneInput" type="text" label="$i18n{addressPhone}"
               always-float-label class="address-column"
               on-value-changed="updateCanSave_" value="{{phoneNumber_}}">
           </paper-input>
           <paper-input id="emailInput" type="text" label="$i18n{addressEmail}"
               on-value-changed="updateCanSave_" always-float-label
               class="address-column long" value="{{email_}}">
           </paper-input>
         </div>
       </div>
       <div class="button-container">
         <paper-button id="cancelButton" class="cancel-button"
             on-tap="onCancelTap_">
           $i18n{cancel}
         </paper-button>
         <paper-button id="saveButton" class="action-button"
             disabled="[[!canSave_]]" on-tap="onSaveButtonTap_">
           $i18n{save}
         </paper-button>
       </div>
     </dialog>
   </template>
   <script src="address_edit_dialog.js"></script>
 </dom-module>