Adding Priority field to cookies.

chrome/common/extensions/api/cookies.json

Index: chrome/common/extensions/api/cookies.json
diff --git a/chrome/common/extensions/api/cookies.json b/chrome/common/extensions/api/cookies.json
index fc3e53feda4d0b5373b699a000cd6354f2f45c9a..1ad6fa7d79edc32afaa4360e2391185f3b16b637 100644
--- a/chrome/common/extensions/api/cookies.json
+++ b/chrome/common/extensions/api/cookies.json
@@ -18,6 +18,7 @@
           "path": {"type": "string", "description": "The path of the cookie."},
           "secure": {"type": "boolean", "description": "True if the cookie is marked as Secure (i.e. its scope is limited to secure channels, typically HTTPS)."},
           "httpOnly": {"type": "boolean", "description": "True if the cookie is marked as HttpOnly (i.e. the cookie is inaccessible to client-side scripts)."},
+          "priority": {"type": "string", "description": "The retention priority of the cookie."},
           "session": {"type": "boolean", "description": "True if the cookie is a session cookie, as opposed to a persistent cookie with an expiration date."},
           "expirationDate": {"type": "number", "optional": true, "description": "The expiration date of the cookie as the number of seconds since the UNIX epoch. Not provided for session cookies."},
           "storeId": {"type": "string", "description": "The ID of the cookie store containing this cookie, as provided in getAllCookieStores()."}
@@ -107,6 +108,7 @@
               "path": {"type": "string", "optional": true, "description": "The path of the cookie. Defaults to the path portion of the url parameter."},
               "secure": {"type": "boolean", "optional": true, "description": "Whether the cookie should be marked as Secure. Defaults to false."},
               "httpOnly": {"type": "boolean", "optional": true, "description": "Whether the cookie should be marked as HttpOnly. Defaults to false."},
+              "priority": {"type": "string", "optional": true, "description": "The retention priority of the cookie."},
               "expirationDate": {"type": "number", "optional": true, "description": "The expiration date of the cookie as the number of seconds since the UNIX epoch. If omitted, the cookie becomes a session cookie."},
               "storeId": {"type": "string", "optional": true, "description": "The ID of the cookie store in which to set the cookie. By default, the cookie is set in the current execution context's cookie store."}
             }