Don't eat newlines in CL descriptions when merging changes using drover.
Don't eat newlines in CL descriptions when merging changes using drover.

BUG=80589
TEST=Merge a CL using drover and when prompted to upload, check that the original CL description still has its linebreaks.
Review URL: http://codereview.chromium.org/6893095

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@83561 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

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