Linux sandbox: Deprecate compatibility API

Now that all BPF policies are migrated, remove stubs of old API.

BUG=325535
NOTRY=true
R=jorgelo@chromium.org

Review URL: https://codereview.chromium.org/108563007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239909 0039d316-1c4b-4281-b951-d872f2087c98
Do something more interesting than printf when an event is received by sample_app.

R=abarth@chromium.org
http://crbug.com/324639

Review URL: https://codereview.chromium.org/108273008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239910 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239910
cc: Remove dead function declaration

R=jamesr@chromium.org
BUG=none

Review URL: https://codereview.chromium.org/110873005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239911 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239911