Revert 239910 "Do something more interesting than printf when an..."

> 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

TBR=ben@chromium.org

Review URL: https://codereview.chromium.org/98303003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239918 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239918