Remove msvs_guid from webkit_unit_tests.
Remove msvs_guid from webkit_unit_tests.

BUG=28727
R=tony@chromium.org

Review URL: https://codereview.chromium.org/59843009

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@161393 bbb929c8-8fbe-4397-9dbb-9b2b20218538

primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs,primiano/blink-gitcs