Set the @filename where non-session cookies are stored persistently using
@storage as the format to read/write the cookies.
Cookies are initially read from @filename to create an initial set of cookies.
Then, non-session cookies will be written to @filename when the WebKitCookieManager::changed
signal is emitted.
By default, @cookie_manager doesn't store the cookies persistently, so you need to call this
method to keep cookies saved across sessions.
This method should never be called on a #WebKitCookieManager associated to an ephemeral #WebKitWebsiteDataManager.
Set the @filename where non-session cookies are stored persistently using @storage as the format to read/write the cookies. Cookies are initially read from @filename to create an initial set of cookies. Then, non-session cookies will be written to @filename when the WebKitCookieManager::changed signal is emitted. By default, @cookie_manager doesn't store the cookies persistently, so you need to call this method to keep cookies saved across sessions.
This method should never be called on a #WebKitCookieManager associated to an ephemeral #WebKitWebsiteDataManager.