Add adb version check to adb_remote_setup.sh.

tools/android/adb_remote_setup.sh

 #!/bin/bash
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # URL from which the latest version of this script can be downloaded.
 script_url="http://src.chromium.org/svn/trunk/src/tools/android/adb_remote_setup.sh"
 
 # Replaces this file with the latest version of the script and runs it.
 update-self() {
@@ skipping 43 matching lines @@
 if ! which adb >/dev/null; then
   echo "error: adb must be in your local machine's path."
   exit 1
 fi
 
 if which kinit >/dev/null; then
   # Allow ssh to succeed without typing your password multiple times.
   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"
 
 # Start the adb server locally.
 adb start-server
 
 # Forward various ports from the remote host to the local host:
 #   5037: adb
 #   8001: http server
 #   9031: sync server
 #   10000: net unittests
 #   10201: net unittests
 ssh -C \
     -R 5037:localhost:5037 \
     -L 8001:localhost:8001 \
     -L 9031:localhost:9031 \
     -R 10000:localhost:10000 \
     -R 10201:localhost:10201 \
     "$remote_host"