[Sync] Introduce SyncedSessionWindow type.

components/sessions/core/session_types.cc

 // Copyright 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.
 
 #include "components/sessions/core/session_types.h"
 
 #include <stddef.h>
 
 #include "components/sessions/core/session_command.h"
 
@@ skipping 21 matching lines @@
   pinned = sync_data.pinned();
   extension_app_id = sync_data.extension_app_id();
   user_agent_override.clear();
   this->timestamp = timestamp;
   navigations.clear();
   for (int i = 0; i < sync_data.navigation_size(); ++i) {
     navigations.push_back(
         SerializedNavigationEntry::FromSyncData(i, sync_data.navigation(i)));
   }
   session_storage_persistent_id.clear();
-  variation_ids.clear();
-  for (int i = 0; i < sync_data.variation_id_size(); ++i)
-    variation_ids.push_back(sync_data.variation_id(i));
 }
 
 sync_pb::SessionTab SessionTab::ToSyncData() const {
   sync_pb::SessionTab sync_data;
   sync_data.set_tab_id(tab_id.id());
   sync_data.set_window_id(window_id.id());
   sync_data.set_tab_visual_index(tab_visual_index);
   sync_data.set_current_navigation_index(current_navigation_index);
   sync_data.set_pinned(pinned);
   sync_data.set_extension_app_id(extension_app_id);
   for (const SerializedNavigationEntry& navigation : navigations) {
     *sync_data.add_navigation() = navigation.ToSyncData();
   }
-  for (const variations::VariationID variation_id : variation_ids) {
-    sync_data.add_variation_id(variation_id);
-  }
   return sync_data;
 }
 
 // SessionWindow ---------------------------------------------------------------
 
 SessionWindow::SessionWindow()
     : selected_tab_index(-1),
       type(TYPE_TABBED),
       is_constrained(true),
       show_state(ui::SHOW_STATE_DEFAULT) {}
 
 SessionWindow::~SessionWindow() {}
 
-sync_pb::SessionWindow SessionWindow::ToSyncData() const {
-  sync_pb::SessionWindow sync_data;
-  sync_data.set_window_id(window_id.id());
-  sync_data.set_selected_tab_index(selected_tab_index);
-  switch (type) {
-    case SessionWindow::TYPE_TABBED:
-      sync_data.set_browser_type(
-          sync_pb::SessionWindow_BrowserType_TYPE_TABBED);
-      break;
-    case SessionWindow::TYPE_POPUP:
-      sync_data.set_browser_type(
-        sync_pb::SessionWindow_BrowserType_TYPE_POPUP);
-      break;
-    default:
-      NOTREACHED() << "Unhandled browser type.";
-  }
-
-  for (const auto& tab : tabs)
-    sync_data.add_tab(tab->tab_id.id());
-
-  return sync_data;
-}
-
 }  // namespace sessions