9 uses of LANGUAGE_NEGOTIATION_DEFAULT

language_initialize in drupal-7.x/includes/language.inc: Chooses a language based on language negotiation provider settings.
language_negotiation_get in drupal-7.x/includes/language.inc: Checks whether a language negotiation provider is enabled for a language type.
language_negotiation_info in drupal-7.x/includes/language.inc: Returns all the defined language negotiation providers.
LocaleUILanguageNegotiationTest::testLanguageDomain in drupal-7.x/modules/locale/locale.test: Tests url() when separate domains are used for multiple languages.
LocaleUILanguageNegotiationTest::testUILanguageNegotiation in drupal-7.x/modules/locale/locale.test: Tests for language switching by URL path.
LocaleUninstallFunctionalTest::testUninstallProcess in drupal-7.x/modules/locale/locale.test: Check if the values of the Locale variables are correct after uninstall.
locale_languages_configure_form_submit in drupal-7.x/modules/locale/locale.admin.inc: Submit handler for language negotiation settings.
locale_language_selector_form in drupal-7.x/modules/locale/locale.module: Form builder callback to display language selection widget.
_locale_languages_configure_form_language_table in drupal-7.x/modules/locale/locale.admin.inc: Helper function to build a language provider table.