Chrome OS should open to empty desktop when session restore is empty.

chrome/browser/defaults.h

 // 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.
 
 // Defines various defaults whose values varies depending upon the OS.
 
 #ifndef CHROME_BROWSER_DEFAULTS_H_
 #define CHROME_BROWSER_DEFAULTS_H_
 
 #include "build/build_config.h"
@@ skipping 67 matching lines @@
 
 // ChromiumOS network menu font
 extern const ui::ResourceBundle::FontStyle kAssociatedNetworkFontStyle;
 
 // Preferred infobar border padding in pixels.
 extern const int kInfoBarBorderPaddingVertical;
 
 // Last character display for passwords.
 extern const bool kPasswordEchoEnabled;
 
-// Changes how browser is initialized when executed in app mode.
-// If true after app window is opened continue with regular startup path
-// i.e. session restore, load URLs from cmd line plus focus app window.
-extern const bool kAppRestoreSession;
+// Indicates whether session restore should always create a new
+// tabbed browser. This is true every where except on ChromeOS
+// where we want the desktop to show through in this situation.
+extern const bool kAlwaysCreateTabbedBrowserOnSessionRestore;
 
 //=============================================================================
 // Runtime "const" - set only once after parsing command line option and should
 // never be modified after that.
 
 // Are bookmark enabled? True by default.
 extern bool bookmarks_enabled;
 
 // Whether HelpApp is enabled. True by default. This is only used by Chrome OS
 // today.
 extern bool enable_help_app;
 
 }  // namespace browser_defaults
 
 #endif  // CHROME_BROWSER_DEFAULTS_H_