Kindle exports few interfaces that can be used from a webpage.
This can cause serious security issue. You can read about that
in this link.
Chrome provides such interfaces but they provide it only
in the “chrome” domain. Web scripts from Internet runs in the “internet”
domain and scripts from apps runs in “chrome” domain.
Chrome provides lot of interfaces in the “chrome” domain. In chromeOS
they provide few extra interfaces too. Something like, you can establish
raw TCP connection from the browser.
Kindle team needs to secure these interfaces.