visit
boolean visit(CefCookie cookie,
              int count,
              int total,
              BoolRef delete)
Method that will be called once for each cookie. |count| is the 0-based
 index for the current cookie. |total| is the total number of cookies.
 Set |deleteCookie| to true to delete the cookie currently being visited.
 Return false to stop visiting cookies. This method may never be called if
 no cookies are found.
 为每个cookie调用一次的方法。|count| 是当前cookie的从0开始的索引。|total| 是Cookie的总数。 设置| deleteCookie | 如果为true,则删除当前正在访问的cookie。 返回false以停止访问cookie。 如果未找到cookie,则可能永远不会调用此方法