SameSite: Teach devtools about the new 'samesite' syntax.

third_party/WebKit/Source/devtools/front_end/sdk/CookieParser.js

Index: third_party/WebKit/Source/devtools/front_end/sdk/CookieParser.js
diff --git a/third_party/WebKit/Source/devtools/front_end/sdk/CookieParser.js b/third_party/WebKit/Source/devtools/front_end/sdk/CookieParser.js
index 1bea7702ad4e362dc36dd8bd4b13037c282d4dd4..98b53de4407a740030bd8465e7515413fb0c3880 100644
--- a/third_party/WebKit/Source/devtools/front_end/sdk/CookieParser.js
+++ b/third_party/WebKit/Source/devtools/front_end/sdk/CookieParser.js
@@ -258,11 +258,11 @@ WebInspector.Cookie.prototype = {
     },
 
     /**
-     * @return {boolean}
+     * @return {string}
      */
     sameSite: function ()
     {
-        return "samesite" in this._attributes;
+        return this._attributes["samesite"];
     },
 
     /**
@@ -382,6 +382,15 @@ WebInspector.Cookie.Type = {
     Response: 1
 };
 
+/**
+ * @enum {string}
+ */
+WebInspector.Cookie.SameSiteMode = {
+    Strict: "Strict",
+    Lax: "Lax",
+    NoRestriction: "NoRestriction"
+};
+
 WebInspector.Cookies = {}
 
 /**
@@ -429,7 +438,7 @@ WebInspector.Cookies._parseProtocolCookie = function(target, protocolCookie)
     if (protocolCookie["secure"])
         cookie.addAttribute("secure");
     if (protocolCookie["sameSite"])
-        cookie.addAttribute("sameSite");
+        cookie.addAttribute("sameSite", protocolCookie["sameSite"]);
     cookie.setSize(protocolCookie["size"]);
     return cookie;
 }