Revert 271762 "Add native event testing to chromeos::EventRewrit..."
Breaks linux chromiumos asan lsan test EventRewriterTest.TestRewriteFunctionKeys
http://build.chromium.org/p/chromium.memory/buildstatus?builder=Linux%20Chromium%20OS%20ASan%20LSan%20Tests%20%283%29&number=1454
> Add native event testing to chromeos::EventRewriter unit tests.
>
> R=sadrul@chromium.org
>
> Review URL: https://codereview.chromium.org/
270633012
TBR=kpschoedel@chromium.org
Review URL: https://codereview.chromium.org/
297783003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@271791 0039d316-1c4b-4281-b951-d872f2087c98