Add a tutorial / walkthrough for pure-git workflow.
TBR=agable@chromium.org, szager@chromium.org
BUG=261743
Review URL: https://codereview.chromium.org/225433003
git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@263164 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/docs/src/git-nav-downstream.demo.1.sh b/docs/src/git-nav-downstream.demo.1.sh
new file mode 100755
index 0000000..ba22243
--- /dev/null
+++ b/docs/src/git-nav-downstream.demo.1.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+. demo_repo.sh
+
+silent git checkout origin/master
+
+run git map-branches
+pcommand git nav-downstream
+git nav-downstream --pick 0 2>&1
+run git map-branches
+run git nav-downstream 2>&1
+run git map-branches
+