Mark EtwTraceControllerTest.EnableDisable as flaky.
Mark EtwTraceControllerTest.EnableDisable as flaky.

TBR=siggi

BUG=59328
TEST=base_unittests

Review URL: http://codereview.chromium.org/3829003

git-svn-id: http://src.chromium.org/svn/trunk/src@62715 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: b65be2668f8678799eb9a78bdac428b3b63217d5
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser