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// 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/extension_webkit_preferences.h"
#include "base/command_line.h"
#include "chrome/common/chrome_switches.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest.h"
#include "webkit/common/webpreferences.h"
namespace extension_webkit_preferences {
void SetPreferences(const extensions::Extension* extension,
extensions::ViewType render_view_type,
WebPreferences* webkit_prefs) {
if (!extension)
return;
if (!extension->is_hosted_app()) {
// Extensions are trusted so we override any user preferences for disabling
// javascript or images.
webkit_prefs->loads_images_automatically = true;
webkit_prefs->javascript_enabled = true;
// Tabs aren't typically allowed to close windows. But extensions shouldn't
// be subject to that.
webkit_prefs->allow_scripts_to_close_windows = true;
// Disable gpu acceleration for extension background pages to avoid
// unecessarily creating a compositor context for them.
if (render_view_type == extensions::VIEW_TYPE_EXTENSION_BACKGROUND_PAGE) {
webkit_prefs->accelerated_compositing_enabled = false;
webkit_prefs->force_compositing_mode = false;
}
}
if (extension->is_platform_app()) {
webkit_prefs->databases_enabled = false;
webkit_prefs->local_storage_enabled = false;
webkit_prefs->sync_xhr_in_documents_enabled = false;
webkit_prefs->cookie_enabled = false;
}
// Enable WebGL features that regular pages can't access, since they add
// more risk of fingerprinting.
webkit_prefs->privileged_webgl_extensions_enabled = true;
}
} // namespace extension_webkit_preferences
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