[Android] Add a configurable environment for devil/. (RELAND 2)

build/android/devil/android/device_utils.py

Index: build/android/devil/android/device_utils.py
diff --git a/build/android/devil/android/device_utils.py b/build/android/devil/android/device_utils.py
index aee5d7cac35f7a5a5720ffd216986780f02bb8d1..96cae8ae48d1cea3516f24c7675d9af3b791ee49 100644
--- a/build/android/devil/android/device_utils.py
+++ b/build/android/devil/android/device_utils.py
@@ -22,6 +22,7 @@ import time
 import zipfile
 
 from devil import base_error
+from devil import devil_env
 from devil.utils import cmd_helper
 from devil.android import apk_helper
 from devil.android import device_signal
@@ -40,7 +41,6 @@ from devil.utils import parallelizer
 from devil.utils import reraiser_thread
 from devil.utils import timeout_retry
 from devil.utils import zip_utils
-from pylib import constants
 from pylib.device.commands import install_commands
 
 _DEFAULT_TIMEOUT = 30
@@ -105,7 +105,8 @@ def GetAVDs():
     A list containing the configured AVDs.
   """
   lines = cmd_helper.GetCmdOutput([
-      os.path.join(constants.ANDROID_SDK_ROOT, 'tools', 'android'),
+      os.path.join(devil_env.config.LocalPath('android_sdk'),
+                   'tools', 'android'),
       'list', 'avd']).splitlines()
   avds = []
   for line in lines: