Implement pref policy for disabling incognito mode....

chrome/common/policy_constants.cc

Index: chrome/common/policy_constants.cc
===================================================================
--- chrome/common/policy_constants.cc	(revision 72634)
+++ chrome/common/policy_constants.cc	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -58,6 +58,7 @@
 const char kShowHomeButton[] = "ShowHomeButton";
 const char kPrintingEnabled[] = "PrintingEnabled";
 const char kJavascriptEnabled[] = "JavascriptEnabled";
+const char kIncognitoEnabled[] = "IncognitoEnabled";
 const char kSavingBrowserHistoryDisabled[] = "SavingBrowserHistoryDisabled";
 const char kDeveloperToolsDisabled[] = "DeveloperToolsDisabled";
 const char kBlockThirdPartyCookies[] = "BlockThirdPartyCookies";