[Sync] Create new top-level sync/ directory

chrome/browser/sync/protocol/app_specifics.proto

-// 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.
-//
-// Sync protocol datatype extension for apps.
-
-// Update proto_value_conversions{.h,.cc,_unittest.cc} if you change
-// any fields in this file.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-option retain_unknown_fields = true;
-
-package sync_pb;
-
-import "extension_specifics.proto";
-
-// Settings related to push notifications for apps.
-message AppNotificationSettings {
-  // DEPRECATED: Use oauth_client_id below.
-  // Whether or not the user has setup notifications at least once.
-  // The value for this field will start out false and will be set
-  // to true when the user accepts receiving notifications for the
-  // first time and then it will always remain true.
-  optional bool initial_setup_done = 1;
-
-  // Whether or not the user has disabled notifications.
-  optional bool disabled = 2;
-
-  // OAuth2 client id to which the user granted the notification permission.
-  // This field will start out empty.
-  // It will be set when the user accepts receiving notifications.
-  // This field is used when the user revokes the notifications permission.
-  // Note that it is never cleared after it was set once. Hence, the presence
-  // of this field can be used to determine if the user has setup notifications
-  // at least once for the given app.
-  optional string oauth_client_id = 3;
-}
-
-// Properties of app sync objects.
-//
-// For now, an app is just an extension.  We keep the two data types
-// separate for future-proofing purposes.
-message AppSpecifics {
-  // Extension data.
-  optional ExtensionSpecifics extension = 1;
-
-  // Notification settings.
-  optional AppNotificationSettings notification_settings = 2; 
-
-  // This controls where on a page this application icon will appear.
-  optional string app_launch_ordinal = 3;
-
-  // This specifics which page the application icon will appear on in the NTP.
-  // This values only provide the order within the application pages, not within
-  // all of the panels in the NTP.
-  optional string page_ordinal = 4;
-}
-