Nukes PrefServiceUITest file deletion code in favor of DieFileDie, which I suspect is causing purify ui test flakeyness.
Nukes PrefServiceUITest file deletion code in favor of DieFileDie,
which I suspect is causing purify ui test flakeyness.

BUG=6557
TEST=none

Review URL: http://codereview.chromium.org/20439

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@9920 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