Expose useful command line switches and preferences as ApplicationSettings

[cztomczak]

There is a bunch of useful command line switches and preferences in the CEF4Delphi project:

1. Command line switches: https://github.com/salvadordf/CEF4Delphi/blob/627a77e8d2d1dc26d76f1d32a0f0e538ea4ce1fe/source/uCEFApplication.pas#L1363
2. Preferences: https://github.com/salvadordf/CEF4Delphi/blob/c57b66c402e4263b1202f1c004437dc848aabf1f/source/uFMXChromium.pas#L2076

Related: #244 ("Expose Request Contexts and Chromium Preferences")

All CEF preferences can be seen by running http://tests/preferences.html url in cefclient sample application.

A compiled list of all preferences:

accessibility.show_internal_accessibility_tree : False
apps.fullscreen.allowed : True
auth.negotiate_delegate_whitelist : 
auth.server_whitelist : 
browser.enable_spellchecking : True
browser.last_known_google_url : https://www.google.com/
browser.last_prompted_google_url : 
content_settings_window.last_tab_index : 0
disable_3d_apis : False
enable_a_ping : False
enable_do_not_track : True
enable_referrers : True
extensions.allowed_install_sites : (0){}
extensions.allowed_types : (0){}
extensions.autoupdate.last_check : 0
extensions.autoupdate.next_check : 0
extensions.corrupted_disable_count : 0
extensions.install.allowlist : (0){}
extensions.install.denylist : (0){}
extensions.last_chrome_version : 
extensions.storage.garbagecollect : False
extensions.theme.id : 
extensions.theme.pack : 
extensions.toolbar : (0){}
extensions.toolbarsize : -1
fullscreen.allowed : True
intl.accept_languages : en-US,en
intl.charset_default : windows-1252
media.default_audio_capture_device : 
media.default_video_capture_Device : 
native_messaging.blacklist : (0){}
native_messaging.user_level_hosts : True
native_messaging.whitelist : (0){}
net.network_prediction_options : 1
plugins.allow_outdated : False
plugins.always_open_pdf_externally : False
plugins.last_internal_directory : 
plugins.plugins_disabled : (0){}
plugins.plugins_disabled_exceptions : (0){}
plugins.plugins_enabled : (0){}
plugins.plugins_list : (0){}
plugins.run_all_flash_in_allow_mode : False
printing.enabled : True
profile.block_third_party_cookies : False
profile.content_settings.domain_to_origin_migration_status : 0
profile.content_settings.pref_version : 1
profile.default_content_setting_values.accessibility_events : 3
profile.default_content_setting_values.app_banner : 0
profile.default_content_setting_values.auto_select_certificate : 0
profile.default_content_setting_values.automatic_downloads : 3
profile.default_content_setting_values.autoplay : 1
profile.default_content_setting_values.background_sync : 1
profile.default_content_setting_values.bluetooth_guard : 3
profile.default_content_setting_values.client_hints : 0
profile.default_content_setting_values.clipboard : 3
profile.default_content_setting_values.cookies : 1
profile.default_content_setting_values.durable_storage : 3
profile.default_content_setting_values.flash_data : 0
profile.default_content_setting_values.fullscreen : 0
profile.default_content_setting_values.geolocation : 3
profile.default_content_setting_values.images : 1
profile.default_content_setting_values.important_site_info : 0
profile.default_content_setting_values.javascript : 1
profile.default_content_setting_values.media_engagement : 0
profile.default_content_setting_values.media_stream_camera : 3
profile.default_content_setting_values.media_stream_mic : 3
profile.default_content_setting_values.midi_sysex : 3
profile.default_content_setting_values.mixed_script : 0
profile.default_content_setting_values.mouselock : 0
profile.default_content_setting_values.notifications : 3
profile.default_content_setting_values.password_protection : 0
profile.default_content_setting_values.payment_handler : 1
profile.default_content_setting_values.permission_autoblocking_data : 0
profile.default_content_setting_values.plugins : 5
profile.default_content_setting_values.popups : 2
profile.default_content_setting_values.ppapi_broker : 3
profile.default_content_setting_values.protocol_handler : 0
profile.default_content_setting_values.sensors : 1
profile.default_content_setting_values.site_engagement : 0
profile.default_content_setting_values.sound : 1
profile.default_content_setting_values.ssl_cert_decisions : 0
profile.default_content_setting_values.subresource_filter : 2
profile.default_content_setting_values.subresource_filter_data : 0
profile.default_content_setting_values.usb_chooser_data : 0
profile.default_content_setting_values.usb_guard : 3
profile.managed_auto_select_certificate_for_urls : (0){}
profile.managed_cookies_allowed_for_urls : (0){}
profile.managed_cookies_blocked_for_urls : (0){}
profile.managed_cookies_sessiononly_for_urls : (0){}
profile.managed_default_content_settings.ads : 0
profile.managed_default_content_settings.cookies : 0
profile.managed_default_content_settings.geolocation : 0
profile.managed_default_content_settings.images : 0
profile.managed_default_content_settings.javascript : 0
profile.managed_default_content_settings.media_stream : 0
profile.managed_default_content_settings.notifications : 0
profile.managed_default_content_settings.plugins : 0
profile.managed_default_content_settings.popups : 0
profile.managed_default_content_settings.web_bluetooth_guard : 0
profile.managed_default_content_settings.web_usb_guard : 0
profile.managed_images_allowed_for_urls : (0){}
profile.managed_images_blocked_for_urls : (0){}
profile.managed_javascript_allowed_for_urls : (0){}
profile.managed_javascript_blocked_for_urls : (0){}
profile.managed_notifications_allowed_for_urls : (0){}
profile.managed_notifications_blocked_for_urls : (0){}
profile.managed_plugins_allowed_for_urls : (0){}
profile.managed_plugins_blocked_for_urls : (0){}
profile.managed_popups_allowed_for_urls : (0){}
profile.managed_popups_blocked_for_urls : (0){}
profile.managed_web_usb_ask_for_urls : (0){}
profile.managed_web_usb_blocked_for_urls : (0){}
proxy.mode : direct
select_file_dialogs.allowed : True
settings.a11y.animation_policy : allowed
settings.force_google_safesearch : False
settings.privacy.drm_enabled : False
settings.privacy.drm_salt : 
spellcheck.dictionaries : (0){}
spellcheck.dictionary : en-US
spellcheck.forced_dictionaries : (0){}
spellcheck.use_spelling_service : False
webkit.webprefs.allow_running_insecure_content : False
webkit.webprefs.default_fixed_font_size : 13
webkit.webprefs.default_font_size : 16
webkit.webprefs.dom_paste_enabled : False
webkit.webprefs.encrypted_media_enabled : True
webkit.webprefs.fonts.standard.Zyyy : Times New Roman
webkit.webprefs.javascript_can_access_clipboard : False
webkit.webprefs.javascript_enabled : True
webkit.webprefs.loads_images_automatically : True
webkit.webprefs.minimum_font_size : 0
webkit.webprefs.minimum_logical_font_size : 6
webkit.webprefs.plugins_enabled : True
webkit.webprefs.tabs_to_links : True
webkit.webprefs.text_areas_are_resizable : True
webkit.webprefs.web_security_enabled : True
webrtc.ip_handling_policy : disable_non_proxied_udp
webrtc.multiple_routes_enabled : False
webrtc.nonproxied_udp_enabled : False
webrtc.udp_port_range : 

[cztomczak]

All preferences that can affect Flash:

plugins.run_all_flash_in_allow_mode = true
plugins.allow_outdated = true
profile.default_content_setting_values.plugins = 1
profile.managed_default_content_settings.plugins = 1
profile.content_settings.exceptions.plugins = {}
profile.managed_plugins_allowed_for_urls = ["https://*", "http://*"]
profile.managed_plugins_blocked_for_urls = []
webkit.webprefs.plugins_enabled = true
plugins.plugins_enabled = []
plugins.plugins_disabled = []
plugins.plugins_disabled_exceptions = []

And switches:

--plugin-policy=(allow|detect|block)
--allow-outdated-plugins
--disable-plugins