rebaseline_server: deprecate --expectations-dir option in advance of git transition
(SkipBuildbotRuns)

R=bsalomon@google.com

Review URL: https://codereview.chromium.org/81243002

git-svn-id: http://skia.googlecode.com/svn/trunk@12351 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed