Ignore untracked files on Windows

Some untracked files were created in a clean repo build on Windows.

NOTRY=true
BUG=
TEST=No untracked files left after building all.sln on Windows 7 (VS20120)


Review URL: http://codereview.chromium.org/9700026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@126724 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed