Add --display option to git cl description
Add --display option to git cl description

A flag for showing the description instead of opening the editor to modify it.

BUG=493885

Review URL: https://codereview.chromium.org/1237483003

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@296000 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools