Base structure.
initiated. The |browser| and |frame| values represent the source of the request, and may be NULL for requests originating from service workers or cef_urlrequest_t. |request| represents the request contents and cannot be modified in this callback. |is_navigation| will be true (1) if the resource request is a navigation. |is_download| will be true (1) if the resource request is a download. |request_initiator| is the origin (scheme + domain) of the page that initiated the request. Set |disable_default_handling| to true (1) to disable default handling of the request, in which case it will need to be handled via
Implement this structure to provide handler implementations. The handler instance will not be released until all objects related to the context have been destroyed.