[MD settings] content exceptions with embeddingOrigin as read-only

chrome/browser/resources/settings/site_settings/site_list.html

 <link rel="import" href="chrome://resources/html/assert.html">
 <link rel="import" href="chrome://resources/html/cr/ui/focus_without_ink.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/cr_elements/cr_action_menu/cr_action_menu.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_pref_indicator.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/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="../i18n_setup.html">
@@ skipping 75 matching lines @@
               </template>
             </div>
             <template is="dom-if" if="[[item.controlledBy]]">
               <cr-policy-pref-indicator pref="[[item]]"
                   icon-aria-label="[[label]]">
               </cr-policy-pref-indicator>
             </template>
 
             <paper-icon-button id="resetSite" icon="cr:delete"
                 hidden="[[isResetButtonHidden_(
-                    item.enforcement, readOnlyList)]]"
+                    item.enforcement, readOnlyList, item)]]"

[dpapad, 2017/05/10 21:44:57]

It seems a bit redundant that we pass |item.enforcement| as the 1st arg, and
then we pass the entire |item| as the 3rd arg. Can we do either of the
following?

isResetButtonHidden_(item, readOnlyList) OR
isResetButtonHidden_(item.enforcement, readOnlyList, item.embeddingOrigin)

[dschuyler, 2017/05/10 22:05:36]

Done.

                 on-tap="onResetButtonTap_"
                 alt="$i18n{siteSettingsActionReset}">
             </paper-icon-button>
             <paper-icon-button id="actionMenuButton" icon="cr:more-vert"
-                hidden=
-                    "[[isActionMenuHidden_(item.enforcement, readOnlyList)]]"
+                hidden="[[isActionMenuHidden_(
+                    item.enforcement, readOnlyList, item)]]"
                 on-tap="onShowActionMenuTap_" title="$i18n{moreActions}">
             </paper-icon-button>
           </div>
         </template>
       </div>
     </div>
     <template is="dom-if" if="[[showEditExceptionDialog_]]" restamp>
       <settings-edit-exception-dialog model="[[actionMenuSite_]]"
           on-close="onEditExceptionDialogClosed_">
       </settings-edit-exception-dialog>
     </template>
   </template>
   <script src="site_list.js"></script>
 </dom-module>