Do not submit: high level overview patch.

chrome/browser/sessions/session_types.cc

 // 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.
 
 #include "chrome/browser/sessions/session_types.h"
 
 #include "base/basictypes.h"
 #include "base/stl_util.h"
 #include "chrome/browser/sessions/session_command.h"
 #include "chrome/browser/ui/browser.h"
 
 using sessions::SerializedNavigationEntry;
 
 // SessionTab -----------------------------------------------------------------
 
 SessionTab::SessionTab()
     : tab_visual_index(-1),
       current_navigation_index(-1),
-      pinned(false) {
-}
+      pinned(false),
+      sync_session_id(-1) {}
 
 SessionTab::~SessionTab() {
 }
 
 void SessionTab::SetFromSyncData(const sync_pb::SessionTab& sync_data,
                                  base::Time timestamp) {
   window_id.set_id(sync_data.window_id());
   tab_id.set_id(sync_data.tab_id());
   tab_visual_index = sync_data.tab_visual_index();
   current_navigation_index = sync_data.current_navigation_index();
@@ skipping 29 matching lines @@
 SessionWindow::SessionWindow()
     : selected_tab_index(-1),
       type(Browser::TYPE_TABBED),
       is_constrained(true),
       show_state(ui::SHOW_STATE_DEFAULT) {
 }
 
 SessionWindow::~SessionWindow() {
   STLDeleteElements(&tabs);
 }