MD Settings: Unify multiple copies of the "edit" string to a single IDS_SETTINGS_EDIT.

chrome/browser/resources/settings/certificate_manager_page/certificate_subentry.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/cr_lazy_render/cr_lazy_render.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
 <link rel="import" href="certificate_manager_types.html">
 <link rel="import" href="certificates_browser_proxy.html">
 <link rel="import" href="../settings_shared_css.html">
 
 <dom-module id="settings-certificate-subentry">
@@ skipping 23 matching lines @@
           on-tap="onDotsTap_"></paper-icon-button>
       <template is="cr-lazy-render" id="menu">
         <dialog is="cr-action-menu">
           <button class="dropdown-item" role="option" id="view"
               on-tap="onViewTap_">
             $i18n{certificateManagerView}
           </button>
           <button class="dropdown-item" role="option" id="edit"
               hidden$="[[!canEdit_(certificateType, model)]]"
               on-tap="onEditTap_">
-            $i18n{certificateManagerEdit}
+            $i18n{edit}
           </button>
           <button class="dropdown-item" role="option" id="export"
               hidden$="[[!canExport_(certificateType, model)]]"
               on-tap="onExportTap_">
             $i18n{certificateManagerExport}
           </button>
           <button class="dropdown-item" role="option" id="delete"
               hidden$="[[!canDelete_(model)]]" on-tap="onDeleteTap_">
             $i18n{certificateManagerDelete}
           </button>
         </dialog>
       </template>
     <div>
   </template>
   <script src="certificate_subentry.js"></script>
 </dom-module>