Add a git-drover.

man/src/git-drover.demo.1.sh

 #!/usr/bin/env bash
 . git-drover.demo.common.sh
 
 drover_c "This change needs to go to branch 9999"
 
-echo "# Make sure we have the most up-to-date branch sources."
-run git fetch
-echo
 echo "# Here's a commit (from some.committer) that we want to 'drover'."
 run git log -n 1 --pretty=fuller
 echo
-echo "# Checkout the branch we want to 'drover' to."
-run git checkout -b drover_9999 branch-heads/9999
+echo "# Now do the 'drover'."
+pcommand git drover --branch 9999 \
+  --cherry-pick $(git show-ref -s pick_commit)
+
+echo "Going to cherry-pick"
+echo '"""'
+output git log -n 1
+echo '"""'
+echo "to 9999. Continue (y/n)? y"
 echo
-echo "# Now do the 'drover'."
-echo "# IMPORTANT!!! Do Not leave off the '-x' flag"
-run git cherry-pick -x $(git show-ref -s pick_commit)
+echo "# A cl is uploaded to rietveld, where it can be reviewed before landing."
 echo
-echo "# That took the code authored by some.committer and committed it to"
-echo "# the branch by the person who drovered it (i.e. you)."
-run git log -n 1 --pretty=fuller
-echo
-echo "# Looks good. Ship it!"
-pcommand git cl upload
-echo "# Wait for LGTM or TBR it."
-run git cl land
-echo "# Or skip the LGTM/TBR and just 'git cl land --bypass-hooks'"
+echo "About to land on 9999. Continue (y/n)? y"
+echo "# The cherry-pick cl is landed on the branch 9999."