Revert r16863 -- WebKit Update 44123:44143 -- because

three tests (TestTwoAuths, TestDigestAuth, TestBasicAuth)
from LoginPromptTest in ui_tests.exe started to fail on
the "Vista Tests" buildbot after this checkin.  Note that
those three tests are still passing on the "XP Tests",
"XP Tests (dbg)(1)", and "Vista Tests (dbg)(1)" buildbots.

TBR=ukai
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/112060

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@16873 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

 vars = {
   "webkit_trunk":
     "http://svn.webkit.org/repository/webkit/trunk",
-  "webkit_revision": "44143",
+  "webkit_revision": "44123",
 }