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// Copyright 2012 The Chromium Authors
// 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 "base/feature_list.h"
#include "chrome/common/chrome_switches.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension.h"
#include "extensions/common/manifest.h"
#include "third_party/blink/public/common/web_preferences/web_preferences.h"
namespace extension_webkit_preferences {
namespace {
// Kill switch for the feature that allows Chrome Apps to ignore the permission
// state of mediaDevices.devicechange event.
// TODO(crbug.com/404106817): Remove the feature after Chrome Apps are gone.
BASE_FEATURE(kIgnorePermissionForDeviceChangedEventForChromeApps,
"IgnorePermissionForDeviceChangedEventForChromeApps",
base::FEATURE_ENABLED_BY_DEFAULT);
} // namespace
void SetPreferences(const extensions::Extension* extension,
blink::web_pref::WebPreferences* webkit_prefs) {
if (!extension)
return;
// Enable navigator.plugins for all app types.
webkit_prefs->allow_non_empty_navigator_plugins = true;
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;
}
if (extension->is_platform_app()) {
webkit_prefs->local_storage_enabled = false;
webkit_prefs->sync_xhr_in_documents_enabled = false;
webkit_prefs->cookie_enabled = false;
webkit_prefs->target_blank_implies_no_opener_enabled_will_be_removed =
false;
if (base::FeatureList::IsEnabled(
kIgnorePermissionForDeviceChangedEventForChromeApps)) {
webkit_prefs->ignore_permission_for_device_changed_event = true;
}
}
// Prevent font size preferences from affecting the PDF Viewer extension.
if (extension->id() == extension_misc::kPdfExtensionId) {
blink::web_pref::WebPreferences default_prefs;
webkit_prefs->default_font_size = default_prefs.default_font_size;
webkit_prefs->default_fixed_font_size =
default_prefs.default_fixed_font_size;
webkit_prefs->minimum_font_size = default_prefs.minimum_font_size;
webkit_prefs->minimum_logical_font_size =
default_prefs.minimum_logical_font_size;
}
// 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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