Import chrome idl into third_party

third_party/chrome/idl/media_galleries_private.idl

+// 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.
+
+// This is a private API for M23. This will be superceded by the
+// systeminfo.storage API in M24.
+
+namespace mediaGalleriesPrivate {
+    // A dictionary that describes an attached device.
+  [inline_doc] dictionary DeviceAttachmentDetails {
+    // The name of the device.
+    DOMString deviceName;
+
+    // A transient id that unique identifies the device.
+    DOMString deviceId;
+  };
+
+  // A dictionary that describes a detached device.
+  [inline_doc] dictionary DeviceDetachmentDetails {
+    // A transient id that unique identifies the device.
+    DOMString deviceId;
+  };
+
+  // A dictionary that describes the modified gallery.
+  [inline_doc] dictionary GalleryChangeDetails {
+    // Gallery identifier.
+    long galleryId;
+  };
+
+  interface Events {
+    // Fired when a media device gets attached.
+    static void onDeviceAttached(DeviceAttachmentDetails details);
+
+    // Fired when a media device gets detached.
+    static void onDeviceDetached(DeviceDetachmentDetails details);
+
+    // Fired when a media gallery is changed.
+    static void onGalleryChanged(GalleryChangeDetails details);
+  };
+
+  // A dictionary that describes the add gallery watch request results.
+  dictionary AddGalleryWatchResult {
+    long galleryId;
+    boolean success;
+  };
+
+  callback AddGalleryWatchCallback = void (AddGalleryWatchResult result);
+
+  interface Functions {
+    static void addGalleryWatch(long galleryId,
+                                AddGalleryWatchCallback callback);
+    static void removeGalleryWatch(long galleryId);
+  };
+};