Add adb version check to adb_remote_setup.sh.

tools/android/adb_remote_setup.sh

Index: tools/android/adb_remote_setup.sh
diff --git a/tools/android/adb_remote_setup.sh b/tools/android/adb_remote_setup.sh
index bf209cdb39c6384618a4dfba5ead704cc3735b54..87c6601b53ed37260198894fe54786fd91db7977 100755
--- a/tools/android/adb_remote_setup.sh
+++ b/tools/android/adb_remote_setup.sh
@@ -61,6 +61,19 @@ if which kinit >/dev/null; then
   kinit -R || kinit
 fi
 
+# Ensure local and remote versions of adb are the same.
+remote_adb_version=$(ssh "$remote_host" "$remote_adb version")
+local_adb_version=$(adb version)
+if [[ "$local_adb_version" != "$remote_adb_version" ]]; then
+  echo >&2
+  echo "WARNING: local adb is not the same version as remote adb." >&2
+  echo "This should be fixed since it may result in protocol errors." >&2
+  echo "  local adb:  $local_adb_version" >&2
+  echo "  remote adb: $remote_adb_version" >&2
+  echo >&2
+  sleep 5
+fi
+
 # Kill the adb server on the remote host.
 ssh "$remote_host" "$remote_adb kill-server"