Allow extensions to specify that they are not allowed in incognito mode.

extensions/browser/extension_util.cc

 // Copyright 2014 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.
 
 #include "extensions/browser/extension_util.h"
 
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/manifest_handlers/app_isolation_info.h"
+#include "extensions/common/manifest_handlers/incognito_info.h"
 
 namespace extensions {
 namespace util {
 
 bool IsExtensionInstalledPermanently(const std::string& extension_id,
                                      content::BrowserContext* context) {
   const Extension* extension = ExtensionRegistry::Get(context)->
       GetExtensionById(extension_id, ExtensionRegistry::EVERYTHING);
   return extension && !IsEphemeralApp(extension_id, context);
 }
@@ skipping 21 matching lines @@
 }
 
 bool SiteHasIsolatedStorage(const GURL& extension_site_url,
                             content::BrowserContext* context) {
   const Extension* extension = ExtensionRegistry::Get(context)->
       enabled_extensions().GetExtensionOrAppByURL(extension_site_url);
 
   return extension && AppIsolationInfo::HasIsolatedStorage(extension);
 }
 
+bool CanBeIncognitoEnabled(const Extension* extension) {
+  return IncognitoInfo::IsIncognitoAllowed(extension) &&
+         (!extension->is_platform_app() ||
+          extension->location() == Manifest::COMPONENT);
+}
+
 }  // namespace util
 }  // namespace extensions