Adding Priority field to cookies.

chrome/common/extensions/api/cookies.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace": "cookies",
     "types": [
       {
         "id": "Cookie",
         "type": "object",
         "description": "Represents information about an HTTP cookie.",
         "properties": {
           "name": {"type": "string", "description": "The name of the cookie."},
           "value": {"type": "string", "description": "The value of the cookie."},
           "domain": {"type": "string", "description": "The domain of the cookie (e.g. \"www.google.com\", \"example.com\")."},
           "hostOnly": {"type": "boolean", "description": "True if the cookie is a host-only cookie (i.e. a request's host must exactly match the domain of the cookie)."},
           "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()."}
         }
       },
       {
         "id": "CookieStore",
         "type": "object",
         "description": "Represents a cookie store in the browser. An incognito mode window, for instance, uses a separate cookie store from a non-incognito window.",
         "properties": {
@@ skipping 69 matching lines @@
             "name": "details",
             "description": "Details about the cookie being set.",
             "properties": {
               "url": {"type": "string", "description": "The request-URI to associate with the setting of the cookie. This value can affect the default domain and path values of the created cookie. If host permissions for this URL are not specified in the manifest file, the API call will fail."},
               "name": {"type": "string", "optional": true, "description": "The name of the cookie. Empty by default if omitted."},
               "value": {"type": "string", "optional": true, "description": "The value of the cookie. Empty by default if omitted."},
               "domain": {"type": "string", "optional": true, "description": "The domain of the cookie. If omitted, the cookie becomes a host-only cookie."},
               "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."}
             }
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "min_version": "11.0.674.0",
             "parameters": [
@@ skipping 70 matching lines @@
               "removed": {"type": "boolean", "description": "True if a cookie was removed."},
               "cookie": {"$ref": "Cookie", "description": "Information about the cookie that was set or removed."},
               "cause": {"min_version": "12.0.707.0", "type": "string", "enum": ["evicted", "expired", "explicit", "expired_overwrite", "overwrite"], "description": "The underlying reason behind the cookie's change. If a cookie was inserted, or removed via an explicit call to \"chrome.cookies.remove\", \"cause\" will be \"explicit\". If a cookie was automatically removed due to expiry, \"cause\" will be \"expired\". If a cookie was removed due to being overwritten with an already-expired expiration date, \"cause\" will be set to \"expired_overwrite\".  If a cookie was automatically removed due to garbage collection, \"cause\" will be \"evicted\".  If a cookie was automatically removed due to a \"set\" call that overwrote it, \"cause\" will be \"overwrite\". Plan your response accordingly."}
             }
           }
         ]
       }
     ]
   }
 ]