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

chrome/browser/extensions/crx_installer.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/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 307 matching lines @@
       if (extension->UpdatesFromGallery()) {
         return CrxInstallerError(
             l10n_util::GetStringFUTF16(
                 IDS_EXTENSION_DISALLOW_NON_DOWNLOADED_GALLERY_INSTALLS,
                 l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE)));
       }
 
       // For self-hosted apps, verify that the entire extent is on the same
       // host (or a subdomain of the host) the download happened from.  There's
       // no way for us to verify that the app controls any other hosts.
-      URLPattern pattern(UserScript::kValidUserScriptSchemes);
+      URLPattern pattern(UserScript::ValidUserScriptSchemes());
       pattern.SetHost(download_url_.host());
       pattern.SetMatchSubdomains(true);
 
       URLPatternSet patterns = extension_->web_extent();
       for (URLPatternSet::const_iterator i = patterns.begin();
            i != patterns.end(); ++i) {
         if (!pattern.MatchesHost(i->host())) {
           return CrxInstallerError(
               l10n_util::GetStringUTF16(
                   IDS_EXTENSION_INSTALL_INCORRECT_INSTALL_HOST));
@@ skipping 466 matching lines @@
   if (!prefs->DidExtensionEscalatePermissions(extension_->id()))
     return;
 
   if (client_) {
     AddRef();  // Balanced in InstallUIProceed() and InstallUIAbort().
     client_->ConfirmReEnable(this, extension_.get());
   }
 }
 
 }  // namespace extensions