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diff --git a/third_party/rust/cookie/src/draft.rs b/third_party/rust/cookie/src/draft.rs
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+++ b/third_party/rust/cookie/src/draft.rs
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+//! This module contains types that represent cookie properties that are not yet
+//! standardized. That is, _draft_ features.
+
+use std::fmt;
+
+/// The `SameSite` cookie attribute.
+///
+/// A cookie with a `SameSite` attribute is imposed restrictions on when it is
+/// sent to the origin server in a cross-site request. If the `SameSite`
+/// attribute is "Strict", then the cookie is never sent in cross-site requests.
+/// If the `SameSite` attribute is "Lax", the cookie is only sent in cross-site
+/// requests with "safe" HTTP methods, i.e, `GET`, `HEAD`, `OPTIONS`, `TRACE`.
+/// If the `SameSite` attribute is "None", the cookie is sent in all cross-site
+/// requests if the "Secure" flag is also set, otherwise the cookie is ignored.
+/// This library automatically sets the "Secure" flag on cookies when
+/// `same_site` is set to `SameSite::None` as long as `secure` is not explicitly
+/// set to `false`.
+///
+/// If the `SameSite` attribute is not present (by not setting `SameSite`
+/// initally or passing `None` to [`Cookie::set_same_site()`]), then the cookie
+/// will be sent as normal.
+///
+/// **Note:** This cookie attribute is an [HTTP draft]! Its meaning and
+/// definition are subject to change.
+///
+/// [`Cookie::set_same_site()`]: crate::Cookie::set_same_site()
+/// [HTTP draft]: https://tools.ietf.org/html/draft-west-cookie-incrementalism-00
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum SameSite {
+    /// The "Strict" `SameSite` attribute.
+    Strict,
+    /// The "Lax" `SameSite` attribute.
+    Lax,
+    /// The "None" `SameSite` attribute.
+    None
+}
+
+impl SameSite {
+    /// Returns `true` if `self` is `SameSite::Strict` and `false` otherwise.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use cookie::SameSite;
+    ///
+    /// let strict = SameSite::Strict;
+    /// assert!(strict.is_strict());
+    /// assert!(!strict.is_lax());
+    /// assert!(!strict.is_none());
+    /// ```
+    #[inline]
+    pub fn is_strict(&self) -> bool {
+        match *self {
+            SameSite::Strict => true,
+            SameSite::Lax | SameSite::None => false,
+        }
+    }
+
+    /// Returns `true` if `self` is `SameSite::Lax` and `false` otherwise.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use cookie::SameSite;
+    ///
+    /// let lax = SameSite::Lax;
+    /// assert!(lax.is_lax());
+    /// assert!(!lax.is_strict());
+    /// assert!(!lax.is_none());
+    /// ```
+    #[inline]
+    pub fn is_lax(&self) -> bool {
+        match *self {
+            SameSite::Lax => true,
+            SameSite::Strict | SameSite::None => false,
+        }
+    }
+
+    /// Returns `true` if `self` is `SameSite::None` and `false` otherwise.
+    ///
+    /// # Example
+    ///
+    /// ```rust
+    /// use cookie::SameSite;
+    ///
+    /// let none = SameSite::None;
+    /// assert!(none.is_none());
+    /// assert!(!none.is_lax());
+    /// assert!(!none.is_strict());
+    /// ```
+    #[inline]
+    pub fn is_none(&self) -> bool {
+        match *self {
+            SameSite::None => true,
+            SameSite::Lax | SameSite::Strict => false
+        }
+    }
+}
+
+impl fmt::Display for SameSite {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match *self {
+            SameSite::Strict => write!(f, "Strict"),
+            SameSite::Lax => write!(f, "Lax"),
+            SameSite::None => write!(f, "None"),
+        }
+    }
+}