Add a sign-in promo message to the Other Devices menu.

chrome/browser/ui/webui/ntp/foreign_session_handler.h

Index: chrome/browser/ui/webui/ntp/foreign_session_handler.h
diff --git a/chrome/browser/ui/webui/ntp/foreign_session_handler.h b/chrome/browser/ui/webui/ntp/foreign_session_handler.h
index 4f823166882c5b656fd8b5454e1e12eaae4b1633..b57e8cf409d8ca49f60a87d0101d1d737a6f24c8 100644
--- a/chrome/browser/ui/webui/ntp/foreign_session_handler.h
+++ b/chrome/browser/ui/webui/ntp/foreign_session_handler.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -37,6 +37,9 @@ class ForeignSessionHandler : public content::WebUIMessageHandler,
   // Returns a pointer to the current session model associator or NULL.
   SessionModelAssociator* GetModelAssociator();
 
+  // Returns true if tab sync is enabled for this profile, otherwise false.
+  bool IsTabSyncEnabled();
+
   // Determines which session is to be opened, and then calls
   // OpenForeignSession, to begin the process of opening a new browser window.
   // This is a javascript callback handler.