Move android buildbot test logic into python

build/android/buildbot/bb_webkit_latest_webkit_tester.sh

Index: build/android/buildbot/bb_webkit_latest_webkit_tester.sh
diff --git a/build/android/buildbot/bb_webkit_latest_webkit_tester.sh b/build/android/buildbot/bb_webkit_latest_webkit_tester.sh
index a49509f6bb7d2b001ac1fbf1ec92a4699c810b02..aabc79e34029293a3a4f742c576c623d64614249 100755
--- a/build/android/buildbot/bb_webkit_latest_webkit_tester.sh
+++ b/build/android/buildbot/bb_webkit_latest_webkit_tester.sh
@@ -1,20 +1,8 @@
-#!/bin/bash -ex
+#!/bin/bash
 # Copyright (c) 2012 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.
-#
-# Buildbot annotator script for the WebKit latest WebKit tester on the
-# WebKit canary waterfall.
 
-BB_DIR="$(dirname $0)"
-BB_SRC_ROOT="$(cd  "$BB_DIR/../../.."; pwd)"
-. "$BB_DIR/buildbot_functions.sh"
-
-bb_baseline_setup "$BB_SRC_ROOT" "$@"
-bb_spawn_logcat_monitor_and_status
-bb_extract_build
-bb_reboot_phones
-bb_run_webkit_unit_tests
-bb_lint_webkit_expectation_files
-bb_run_webkit_layout_tests
-bb_print_logcat
+# DO NOT MODIFY. Scheduled to be removed.
+# Buildbot configs will be changed to call bb_bot_steps.py directly.
+exec "$(dirname $0)"/bb_bot_steps.py "$@" --bot-id webkit-latest-webkit-tests