Add git cherry picking extension

man/src/git-cherry-pick-upload.demo.1.sh

Index: man/src/git-cherry-pick-upload.demo.1.sh
diff --git a/man/src/git-cherry-pick-upload.demo.1.sh b/man/src/git-cherry-pick-upload.demo.1.sh
new file mode 100755
index 0000000000000000000000000000000000000000..d4b395511e43b501319e9b2beeca337e7dc12bf6
--- /dev/null
+++ b/man/src/git-cherry-pick-upload.demo.1.sh
@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+. demo_repo.sh
+
+run git cherry-pick-upload -h
+echo
+
+pcommand git cherry-pick-upload -b my_branch c02b7d24a066adb747fdeb12deb21bfa
+echo 'Found parent revision: b96d69fda53845a205151613a9c4cc93'
+echo 'Loaded authentication cookies from .codereview_upload_cookies'
+echo 'Issue created. URL: https://codereview.chromium.org/1234567890'
+echo '  Uploading base_file for some/path/first.file: OK'
+echo '  Uploading some/path/first.file: OK'
+echo '  Uploading base_file for some/path/second.file: OK'
+echo '  Uploading some/path/second.file: OK'
+echo '  Uploading base_file for some/path/third.file: OK'
+echo '  Uploading some/path/third.file: OK'
+echo 'Finalizing upload: OK'