void function ( ) { throw new MustOverrideException ( ) ; }
clears any saved credentials for http authentication . concode_field_sep String LOGTAG concode_field_sep boolean hasUsernamePassword concode_elem_sep boolean hasFormData concode_elem_sep boolean hasHttpAuthUsernamePassword concode_elem_sep void clearFormData concode_elem_sep WebViewDatabase getInstance concode_elem_sep void clearUsernamePassword