1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/extensions/extension_webkit_preferences.h"
6
7#include "base/command_line.h"
8#include "chrome/common/chrome_switches.h"
9#include "content/public/common/web_preferences.h"
10#include "extensions/common/extension.h"
11#include "extensions/common/manifest.h"
12
13namespace extension_webkit_preferences {
14
15void SetPreferences(const extensions::Extension* extension,
16                    extensions::ViewType render_view_type,
17                    content::WebPreferences* webkit_prefs) {
18  if (!extension)
19    return;
20
21  if (!extension->is_hosted_app()) {
22    // Extensions are trusted so we override any user preferences for disabling
23    // javascript or images.
24    webkit_prefs->loads_images_automatically = true;
25    webkit_prefs->javascript_enabled = true;
26
27    // Tabs aren't typically allowed to close windows. But extensions shouldn't
28    // be subject to that.
29    webkit_prefs->allow_scripts_to_close_windows = true;
30  }
31
32  if (extension->is_platform_app()) {
33    webkit_prefs->databases_enabled = false;
34    webkit_prefs->local_storage_enabled = false;
35    webkit_prefs->sync_xhr_in_documents_enabled = false;
36    webkit_prefs->cookie_enabled = false;
37  }
38
39  // Enable WebGL features that regular pages can't access, since they add
40  // more risk of fingerprinting.
41  webkit_prefs->privileged_webgl_extensions_enabled = true;
42}
43
44}  // namespace extension_webkit_preferences
45