sync: take two for: "Added classes to enable session sync...

chrome/browser/sessions/session_types.h

 // Copyright (c) 2006-2008 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.
 
 #ifndef CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_
 #define CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 70 matching lines @@
   // NavigationEntry. Currently only contains HAS_POST_DATA or 0.
   void set_type_mask(int type_mask) { type_mask_ = type_mask; }
   int type_mask() const { return type_mask_; }
 
   // The index in the NavigationController. If this is -1, it means this
   // TabNavigation is bogus.
   //
   // This is used when determining the selected TabNavigation and only useful
   // by BaseSessionService and SessionService.
   void set_index(int index) { index_ = index; }
-  int index() { return index_; }
+  int index() const { return index_; }
 
  private:
   friend class BaseSessionService;
 
   GURL virtual_url_;
   GURL referrer_;
   string16 title_;
   std::string state_;
   PageTransition::Type transition_;
   int type_mask_;
@@ skipping 80 matching lines @@
   // The tabs, ordered by visual order.
   std::vector<SessionTab*> tabs;
 
   // Is the window maximized?
   bool is_maximized;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(SessionWindow);
 };
 
+// Defines a foreign session for session sync.  A foreign session is a session
+// on a remote chrome instance.
+struct ForeignSession {
+  ForeignSession();
+  ~ForeignSession();
+
+  // Unique tag for each session.
+  std::string foreign_tession_tag;
+  std::vector<SessionWindow*> windows;
+};
+
 #endif  // CHROME_BROWSER_SESSIONS_SESSION_TYPES_H_
+