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

third_party/WebKit/Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 1386 matching lines @@
                 "description": "Cookie object",
                 "properties": [
                     { "name": "name", "type": "string", "description": "Cookie name." },
                     { "name": "value", "type": "string", "description": "Cookie value." },
                     { "name": "domain", "type": "string", "description": "Cookie domain." },
                     { "name": "path", "type": "string", "description": "Cookie path." },
                     { "name": "expires", "type": "number", "description": "Cookie expires." },
                     { "name": "size", "type": "integer", "description": "Cookie size." },
                     { "name": "httpOnly", "type": "boolean", "description": "True if cookie is http-only." },
                     { "name": "secure", "type": "boolean", "description": "True if cookie is secure." },
-                    { "name": "session", "type": "boolean", "description": "True in case of session cookie." }
+                    { "name": "session", "type": "boolean", "description": "True in case of session cookie." },
+                    { "name": "sameSite", "type": "string", "description": "'Lax', 'Strict', or the empty string." }

[dgozman, 2016/03/24 18:59:26]

Use enum:
"type": "string", "enum": ["Lax", "Strict", "Default"]

I think empty string is a bad value, let's have Default or something instead.
Or if it is actually optional in the spec, make this property optional as well.

                 ],
                 "hidden": true
             }
         ],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables network tracking, network events will now be delivered to the client.",
                 "parameters": [
                     { "name": "maxTotalBufferSize", "type": "integer", "optional": true, "hidden": true, "description": "Buffer size in bytes to use when preserving network payloads (XHRs, etc)." },
@@ skipping 3772 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$ref": "AXNode", "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists.", "optional": true }
                 ],
                 "description": "Fetches the accessibility node for this DOM node, if it exists.",
                 "hidden": true
             }
         ]
     }]
 }