Reenable fastbuild (for windows only).
Reenable fastbuild (for windows only).

This will be enabled on the windows try slaves.

TEST=none
BUG=none
Review URL: http://codereview.chromium.org/256042

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@27883 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