Add myself to CC in merge_to_branch.py

BUG=
R=machenbach@chromium.org

Review URL: https://codereview.chromium.org/603113002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@24222 ce2b1a6d-e550-0410-aec6-3dcde31c8c00