GTTF: Ensure that when we're testing the logging system will not display dialogs.
GTTF: Ensure that when we're testing the logging system will not display dialogs.

When I was running ui_tests on Linux at the end there were to xmessage windows
on the screen. They shouldn't be there, and they might gum up the bots,
especially if it happens on Windows.

TEST=none
BUG=none

Review URL: http://codereview.chromium.org/2847085

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@54180 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