Introduce incognito preference settings.

chrome/browser/extensions/extension_proxy_api.cc

Index: chrome/browser/extensions/extension_proxy_api.cc
diff --git a/chrome/browser/extensions/extension_proxy_api.cc b/chrome/browser/extensions/extension_proxy_api.cc
index d71c055268053bef17b81d84ee51b46a7aaf1d4a..7f3c5039df5e1ecc03d45546d65bf755bcac1a20 100644
--- a/chrome/browser/extensions/extension_proxy_api.cc
+++ b/chrome/browser/extensions/extension_proxy_api.cc
@@ -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.
 
@@ -171,5 +171,6 @@ bool UseCustomProxySettingsFunction::ApplyProxyRules(
 void UseCustomProxySettingsFunction::ApplyPreference(const char* pref_path,
                                                      Value* pref_value) {
   profile()->GetExtensionService()->extension_prefs()
-      ->SetExtensionControlledPref(extension_id(), pref_path, pref_value);
+      ->SetExtensionControlledPref(extension_id(), pref_path, false,
+                                   pref_value);
 }