[Sync] Create new top-level sync/ directory

chrome/browser/sync/protocol/session_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 sessions.
-
-// 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;
-
-message SessionSpecifics {
-  // Unique id for the client.
-  optional string session_tag = 1;
-  optional SessionHeader header = 2;
-  optional SessionTab tab = 3;
-}
-// Properties of session sync objects.
-message SessionHeader {
-  // Each session is composed of windows.
-  repeated SessionWindow window = 2;
-  // A non-unique but human-readable name to describe this client.
-  optional string client_name = 3;
-  // The type of device.
-  enum DeviceType {
-    TYPE_WIN = 1;
-    TYPE_MAC = 2;
-    TYPE_LINUX = 3;
-    TYPE_CROS = 4;
-    TYPE_OTHER = 5;
-  }
-  optional DeviceType device_type = 4;
-}
-message SessionWindow {
-  // Unique (to the owner) id for this window.
-  optional int32 window_id = 1;
-  // Index of the selected tab in tabs; -1 if no tab is selected.
-  optional int32 selected_tab_index = 2 [default = -1];
-  // Type of the browser. Currently we only store browsers of type
-  // TYPE_TABBED and TYPE_POPUP.
-  enum BrowserType {
-    TYPE_TABBED = 1;
-    TYPE_POPUP = 2;
-  }
-  optional BrowserType browser_type = 3 [default = TYPE_TABBED];
-  // The tabs that compose a window (correspond to tab id's).
-  repeated int32 tab = 4;
-}
-message SessionTab {
-  // Unique (to the owner) id for this tab.
-  optional int32 tab_id = 1;
-  // The unique id for the window this tab belongs to.
-  optional int32 window_id = 2;
-  // Visual index of the tab within its window. There may be gaps in these
-  // values.
-  optional int32 tab_visual_index = 3 [default = -1];
-  // Identifies the index of the current navigation in navigations. For
-  // example, if this is 2 it means the current navigation is navigations[2].
-  optional int32 current_navigation_index = 4 [default = -1];
-  // True if the tab is pinned.
-  optional bool pinned = 5 [default = false];
-  // If non-empty, this tab is an app tab and this is the id of the extension.
-  optional string extension_app_id = 6;
-  // Tabs are navigated, and the navigation data is here.
-  repeated TabNavigation navigation = 7;
-}
-message TabNavigation {
-  // The index in the NavigationController. If this is -1, it means this
-  // TabNavigation is bogus.
-  optional int32 index = 1 [default = -1];
-  // The virtual URL, when nonempty, will override the actual URL of the page
-  // when we display it to the user.
-  optional string virtual_url = 2;
-  // The referring URL, which can be empty.
-  optional string referrer = 3;
-  // The title of the page.
-  optional string title = 4;
-  // Content state is an opaque blob created by WebKit that represents the
-  // state of the page. This includes form entries and scroll position for each
-  // frame.
-  optional string state = 5;
-  // Types of transitions between pages.
-  enum PageTransition {
-    LINK = 0;
-    TYPED = 1;
-    AUTO_BOOKMARK = 2;
-    AUTO_SUBFRAME = 3;
-    MANUAL_SUBFRAME = 4;
-    GENERATED = 5;
-    START_PAGE = 6;
-    FORM_SUBMIT = 7;
-    RELOAD = 8;
-    KEYWORD = 9;
-    KEYWORD_GENERATED = 10;
-    CHAIN_START = 12;
-    CHAIN_END = 13;
-  }
-  // These qualifiers further define the transition.
-  enum PageTransitionQualifier {
-    CLIENT_REDIRECT = 1;
-    SERVER_REDIRECT = 2;
-  }
-  optional PageTransition page_transition = 6 [default = TYPED];
-  optional PageTransitionQualifier navigation_qualifier = 7;
-}
-