[Android] Make the adb path configurable in three scripts.

build/android/provision_devices.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2013 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.
 
 """Provisions Android devices with settings required for bots.
 
 Usage:
   ./provision_devices.py [-d <device serial number>]
 """
 
 import argparse
 import datetime
 import json
 import logging
 import os
 import posixpath
 import re
 import subprocess
 import sys
 import time
 
 import devil_chromium
+from devil import devil_env
 from devil.android import battery_utils
 from devil.android import device_blacklist
 from devil.android import device_errors
 from devil.android import device_temp_file
 from devil.android import device_utils
 from devil.android.sdk import keyevent
 from devil.android.sdk import version_codes
 from devil.utils import run_tests_helper
 from devil.utils import timeout_retry
 from pylib import constants
@@ skipping 428 matching lines @@
   # --min-battery-level 95
   #     Some perf bots run benchmarks with USB charging disabled which leads
   #     to gradual draining of the battery. We must wait for a full charge
   #     before starting a run in order to keep the devices online.
 
   parser = argparse.ArgumentParser(
       description='Provision Android devices with settings required for bots.')
   parser.add_argument('-d', '--device', metavar='SERIAL',
                       help='the serial number of the device to be provisioned'
                       ' (the default is to provision all devices attached)')
+  parser.add_argument('--adb-path',
+                      help='Absolute path to the adb binary to use.')
   parser.add_argument('--blacklist-file', help='Device blacklist JSON file.')
   parser.add_argument('--phase', action='append', choices=_PHASES.ALL,
                       dest='phases',
                       help='Phases of provisioning to run. '
                            '(If omitted, all phases will be run.)')
   parser.add_argument('--skip-wipe', action='store_true', default=False,
                       help="don't wipe device data during provisioning")
   parser.add_argument('--reboot-timeout', metavar='SECS', type=int,
                       help='when wiping the device, max number of seconds to'
                       ' wait after each reboot '
@@ skipping 29 matching lines @@
                       help='Json file to output the device blacklist.')
   parser.add_argument('--chrome-specific-wipe', action='store_true',
                       help='only wipe chrome specific data during provisioning')
   parser.add_argument('--emulators', action='store_true',
                       help='provision only emulators and ignore usb devices')
   args = parser.parse_args()
   constants.SetBuildType(args.target)
 
   run_tests_helper.SetLogLevel(args.verbose)
 
-  devil_chromium.Initialize()
+  devil_custom_deps = None
+  if args.adb_path:
+    devil_custom_deps = {
+      'adb': {
+        devil_env.GetPlatform(): [args.adb_path],
+      },
+    }
+
+  devil_chromium.Initialize(custom_deps=devil_custom_deps)
 
   return ProvisionDevices(args)
 
 
 if __name__ == '__main__':
   sys.exit(main())