Exempt chrome-extension:// from third-party cookie rules, but not from regular content settings

chrome/browser/content_settings/host_content_settings_map.cc

 // 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.
 
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/stl_util.h"
@@ skipping 389 matching lines @@
         rule.primary_pattern, rule.secondary_pattern,
         content_settings::ValueToContentSetting(rule.value.get()),
         kProviderNames[provider_type],
         incognito));
   }
 }
 
 bool HostContentSettingsMap::ShouldAllowAllContent(
     const GURL& url,
     ContentSettingsType content_type) {
-  if (content_type == CONTENT_SETTINGS_TYPE_NOTIFICATIONS)
+  if (content_type == CONTENT_SETTINGS_TYPE_NOTIFICATIONS ||
+      content_type == CONTENT_SETTINGS_TYPE_COOKIES)
     return false;
   return url.SchemeIs(chrome::kChromeDevToolsScheme) ||
          url.SchemeIs(chrome::kChromeInternalScheme) ||
          url.SchemeIs(chrome::kChromeUIScheme) ||
          url.SchemeIs(chrome::kExtensionScheme);
 }