Move android buildbot test logic into python

build/android/buildbot/bb_main_tester.sh

Index: build/android/buildbot/bb_main_tester.sh
diff --git a/build/android/buildbot/bb_main_tester.sh b/build/android/buildbot/bb_main_tester.sh
index 287d28146e936f115264e4e051d1d937e8759f68..eaeec410c2920415ac2cc753dc142d27b6d66852 100755
--- a/build/android/buildbot/bb_main_tester.sh
+++ b/build/android/buildbot/bb_main_tester.sh
@@ -1,23 +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 main waterfall.  Tester only.
 
-BB_DIR="$(dirname $0)"
-BB_SRC_ROOT="$(cd  "$BB_DIR/../../.."; pwd)"
-. "$BB_DIR/buildbot_functions.sh"
-
-# SHERIFF: if you need to quickly turn the main waterfall android bots
-# green (preventing tree closures), uncomment the next line (and send
-# appropriate email out):
-## bb_force_bot_green_and_exit
-
-bb_baseline_setup "$BB_SRC_ROOT" "$@"
-bb_spawn_logcat_monitor_and_status
-bb_extract_build
-bb_reboot_phones
-bb_run_unit_tests
-bb_run_instrumentation_tests
-bb_print_logcat
+# DO NOT MODIFY. Scheduled to be removed.
+# Buildbot configs will be changed to call bb_run_bot.py directly.
+exec "$(dirname $0)"/bb_run_bot.py "$@" --bot-id main-tests-dbg