Returns true (1) if this context has access to the extension identified by
|extension_id|. This may not be the context that was used to load the
extension (see DidLoadExtension). This function must be called on the
browser process UI thread.
WARNING: This function is deprecated and will be removed in ~M127.
Returns true (1) if this context has access to the extension identified by |extension_id|. This may not be the context that was used to load the extension (see DidLoadExtension). This function must be called on the browser process UI thread.
WARNING: This function is deprecated and will be removed in ~M127.