Fix an inaccuracy in the cookies documentation--the expirationDate property i...

chrome/common/extensions/api/extension_api.json

 [
   {
     "namespace": "extension",
     "unprivileged": true,
     "types": [
       {
         "id": "MessageSender",
         "type": "object",
         "description": "An object containing information about the script context that sent a message or request.",
         "properties": {
@@ skipping 2762 matching lines @@
         "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)."},
           "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 milliseconds since the UNIX epoch. Not provided for session cookies."},
+          "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": {
           "id": {"type": "string", "description": "The unique identifier for the cookie store."},
           "tabIds": {"type": "array", "items": {"type": "integer"}, "description": "Identifiers of all the browser tabs that share this cookie store."}
@@ skipping 67 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."},
-              "expirationDate": {"type": "number", "optional": true, "description": "The expiration date of the cookie as the number of milliseconds since the UNIX epoch. If omitted, the cookie becomes a session 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."}
             }
           }
         ]
       },
       {
         "name": "remove",
         "type": "function",
         "description": "Deletes a cookie by name.",
         "parameters": [
@@ skipping 202 matching lines @@
         "parameters": [
           {
             "type": "string",
             "name": "text"
           }
         ]
       }
     ]
   }
 ]