Settings WebUI: change button text to Save

Bug: 698694
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I55642580b173c544659cceee504ecef035047d9b
Reviewed-on: https://chromium-review.googlesource.com/992869Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Esmael El-Moslimany <aee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#547931}

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

@@ -23,7 +23,7 @@
             id="cancel">$i18n{cancel}</paper-button>
         <paper-button id="actionButton" class="action-button"
             on-click="onActionButtonTap_" disabled="[[invalid_]]">
-          $i18n{edit}
+          $i18n{save}
         </paper-button>
       </div>
     </cr-dialog>