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: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@62715 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser