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diff --git a/chrome/browser/sessions/session_restore.h b/chrome/browser/sessions/session_restore.h
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+++ b/chrome/browser/sessions/session_restore.h
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+// Copyright (c) 2010 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_RESTORE_H_
+#define CHROME_BROWSER_SESSIONS_SESSION_RESTORE_H_
+
+#include <vector>
+
+#include "chrome/browser/history/history.h"
+#include "base/basictypes.h"
+
+class Browser;
+class Profile;
+
+// SessionRestore handles restoring either the last or saved session. Session
+// restore come in two variants, asynchronous or synchronous. The synchronous
+// variety is meant for startup, and blocks until restore is complete.
+class SessionRestore {
+ public:
+  // Asnchronously restores the specified session.
+  // If |browser| is non-null the tabs for the first window are added to it.
+  // If clobber_existing_window is true and there is an open browser window,
+  // it is closed after restoring.
+  // If always_create_tabbed_browser is true at least one tabbed browser is
+  // created. For example, if there is an error restoring, or the last session
+  // session is empty and always_create_tabbed_browser is true, a new empty
+  // tabbed browser is created.
+  //
+  // If urls_to_open is non-empty, a tab is added for each of the URLs.
+  static void RestoreSession(Profile* profile,
+                             Browser* browser,
+                             bool clobber_existing_window,
+                             bool always_create_tabbed_browser,
+                             const std::vector<GURL>& urls_to_open);
+
+  // Synchronously restores the last session. At least one tabbed browser is
+  // created, even if there is an error in restoring.
+  //
+  // If urls_to_open is non-empty, a tab is added for each of the URLs.
+  static void RestoreSessionSynchronously(
+      Profile* profile,
+      const std::vector<GURL>& urls_to_open);
+
+  // Returns true if we're in the process of restoring.
+  static bool IsRestoring();
+
+  // The max number of non-selected tabs SessionRestore loads when restoring
+  // a session. A value of 0 indicates all tabs are loaded at once.
+  static size_t num_tabs_to_load_;
+
+ private:
+  SessionRestore();
+
+  DISALLOW_COPY_AND_ASSIGN(SessionRestore);
+};
+
+#endif  // CHROME_BROWSER_SESSIONS_SESSION_RESTORE_H_