chrome/browser/extensions/extension_webkit_preferences.cc

   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
  13 namespace extension_webkit_preferences {
  14
  15 void 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