Allow extensions on chrome:// URLs, when flag is set and permission is explicitly requested

chrome/browser/extensions/active_tab_permission_granter.cc

 // 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.
 
 #include "chrome/browser/extensions/active_tab_permission_granter.h"
 
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_id.h"
@@ skipping 23 matching lines @@
 
 ActiveTabPermissionGranter::~ActiveTabPermissionGranter() {}
 
 void ActiveTabPermissionGranter::GrantIfRequested(const Extension* extension) {
   if (!extension->HasAPIPermission(extensions::APIPermission::kActiveTab))
     return;
 
   if (IsGranted(extension))
     return;
 
-  URLPattern pattern(UserScript::kValidUserScriptSchemes);
+  URLPattern pattern(UserScript::ValidUserScriptSchemes());
   if (pattern.Parse(web_contents()->GetURL().spec()) !=
           URLPattern::PARSE_SUCCESS) {
     // Pattern parsing could fail if this is an unsupported URL e.g. chrome://.
     return;
   }
 
   APIPermissionSet new_apis;
   new_apis.insert(APIPermission::kTab);
   URLPatternSet new_hosts;
   new_hosts.AddPattern(pattern);
@@ skipping 52 matching lines @@
 
   Send(new ExtensionMsg_ClearTabSpecificPermissions(tab_id_, extension_ids));
   granted_extensions_.Clear();
 }
 
 int32 ActiveTabPermissionGranter::GetPageID() {
   return web_contents()->GetController().GetActiveEntry()->GetPageID();
 }
 
 }  // namespace extensions