Add 'Get Info' to contextual menu to display QuickView.

ui/file_manager/file_manager/foreground/js/file_manager_commands.js

 // Copyright (c) 2012 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.
 
 /**
  * Sets 'hidden' property of a cr.ui.Command instance and dispatches
  * 'hiddenChange' event manually so that associated cr.ui.MenuItem can handle
  * the event.
  * TODO(fukino): Remove this workaround when crbug.com/481941 is fixed.
  *
@@ skipping 1040 matching lines @@
    * @param {!FileManager} fileManager FileManager to use.
    */
   canExecute: function(event, fileManager) {
     var canExecute = fileManager.taskController.canExecuteMoreActions();
     event.canExecute = canExecute;
     event.command.setHidden(!canExecute);
   }
 });
 
 /**
+ * Displays QuickView for current selection.
+ * @type {Command}
+ */
+CommandHandler.COMMANDS_['get-info'] = /** @type {Command} */ ({
+  /**
+   * @param {!Event} event Command event.
+   * @param {!FileManager} fileManager fileManager to use.
+   */
+  execute: function(event, fileManager) {
+    // 'get-info' command is executed by 'command' event handler in
+    // QuickViewController.
+  },
+  /**
+   * @param {!Event} event Command event.
+   * @param {!FileManager} fileManager FileManager to use.
+   */
+  canExecute: function(event, fileManager) {
+    var entries = CommandUtil.getCommandEntries(event.target);
+    if (entries.length === 0) {
+      event.canExecute = false;
+      event.command.setHidden(true);
+      return;
+    }
+
+    event.canExecute =  entries.length === 1;
+    event.command.setHidden(false);
+  }
+});
+
+/**
  * Focuses search input box.
  * @type {Command}
  */
 CommandHandler.COMMANDS_['search'] = /** @type {Command} */ ({
   /**
    * @param {!Event} event Command event.
    * @param {!FileManager} fileManager FileManager to use.
    */
   execute: function(event, fileManager) {
     // Cancel item selection.
@@ skipping 512 matching lines @@
     if (entries.length !== 1 || type.type !== 'image') {
       event.canExecute = false;
       event.command.setHidden(true);
       return;
     }
 
     event.canExecute = type.subtype === 'JPEG' || type.subtype === 'PNG';
     event.command.setHidden(false);
   }
 });