Mark destroy-during-npp-new test as flaky on Windows too.
Mark destroy-during-npp-new test as flaky on Windows too.

BUG=21841
TEST=none
TBR=senorblanco
Review URL: http://codereview.chromium.org/235026

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@27291 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