[Android] Switch to new interfaces of GetAVDs and RestartAdbServer.

build/android/pylib/device/device_utils.py

Index: build/android/pylib/device/device_utils.py
diff --git a/build/android/pylib/device/device_utils.py b/build/android/pylib/device/device_utils.py
index 93e364eb426599cdcd32abc69fc1ce9122f3f96d..1440961aa5ec8f31b0a8dc88aab4a945a5dec3a5 100644
--- a/build/android/pylib/device/device_utils.py
+++ b/build/android/pylib/device/device_utils.py
@@ -7,12 +7,15 @@ Provides a variety of device interactions based on adb.
 
 Eventually, this will be based on adb_wrapper.
 """
+# pylint: disable=W0613
 
 import multiprocessing
 import os
 import sys
+
 import pylib.android_commands
 from pylib.device import adb_wrapper
+from pylib.device import decorators
 
 CHROME_SRC_DIR = os.path.abspath(
     os.path.join(os.path.dirname(__file__), '..', '..', '..', '..'))
@@ -20,8 +23,8 @@ sys.path.append(os.path.join(
     CHROME_SRC_DIR, 'third_party', 'android_testrunner'))
 import errors
 
-def GetAVDs():
-  return pylib.android_commands.GetAVDs()
+_DEFAULT_TIMEOUT = 30
+_DEFAULT_RETRIES = 3
 
 
 # multiprocessing map_async requires a top-level function for pickle library.
@@ -51,6 +54,28 @@ def RebootDevices():
       print 'Reboots complete.'
 
 
+@decorators.WithExplicitTimeoutAndRetries(
+    _DEFAULT_TIMEOUT, _DEFAULT_RETRIES)
+def GetAVDs():
+  """ Returns a list of Android Virtual Devices.
+
+  Returns:
+    A list containing the configured AVDs.
+  """
+  return pylib.android_commands.GetAVDs()
+
+
+@decorators.WithExplicitTimeoutAndRetries(
+    _DEFAULT_TIMEOUT, _DEFAULT_RETRIES)
+def RestartServer():
+  """ Restarts the adb server.
+
+  Raises:
+    CommandFailedError if we fail to kill or restart the server.
+  """
+  pylib.android_commands.AndroidCommands().RestartAdbServer()
+
+
 class DeviceUtils(object):
 
   def __init__(self, device):