[MD Extensions] Implement opening tab-style options pages

chrome/browser/resources/md_extensions/service.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('extensions', function() {
   'use strict';
 
   /**
    * @constructor
    * @implements {extensions.ItemDelegate}
@@ skipping 198 matching lines @@
         incognito: view.incognito,
       });
     },
 
     /** @override */
     repairItem: function(id) {
       chrome.developerPrivate.repairExtension(id);
     },
 
     /** @override */
+    showItemOptionsPage: function(id) {
+      var extension = this.extensions_.find(function(extension) {
+        return extension.id == id;
+      });
+      assert(extension && extension.optionsPage);
+      if (extension.optionsPage.openInTab)
+        chrome.developerPrivate.showOptions(id);
+      // TODO(devlin): Handle embedded extension options.
+    },
+
+    /** @override */
     setProfileInDevMode: function(inDevMode) {
       chrome.developerPrivate.updateProfileConfiguration(
           {inDeveloperMode: inDevMode});
     },
 
     /** @override */
     loadUnpacked: function() {
       chrome.developerPrivate.loadUnpacked({failQuietly: true});
     },
 
@@ skipping 19 matching lines @@
     /** @override */
     updateAllExtensions: function() {
       chrome.developerPrivate.autoUpdate();
     },
   };
 
   cr.addSingletonGetter(Service);
 
   return {Service: Service};
 });