Move more files from chrome/browser/nacl_host/ to components/nacl/browser/

These files have no dependencies on chrome/ so they can be safely moved
to the components/ directory.

This is part of an effort to componentize NaCl code.

BUG=244791
R=brettw@chromium.org, cpu@chromium.org, jochen@chromium.org, mseaborn@chromium.org

Review URL: https://codereview.chromium.org/75463005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236821 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236821