Mark NewTabUITest.ChromeInternalLoadsNTP flaky on all platforms.
Mark NewTabUITest.ChromeInternalLoadsNTP flaky on all platforms.

They occasionally fail on other platforms too.
http://test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=NewTabUITest.ChromeInternalLoadsNTP&testType=ui_tests

BUG=45001
TEST=green

Review URL: http://codereview.chromium.org/2825034

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@51549 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