[Android] Convert to DeviceUtils versions of IsOnline, HasRoot, and EnableRoot.

build/android/pylib/device/decorators.py

 # Copyright 2014 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.
 
 """
 Function/method decorators that provide timeout and retry logic.
 """
 
 import functools
+import os
+import sys
 
+from pylib import constants
 from pylib.device import device_errors
 from pylib.utils import reraiser_thread
 from pylib.utils import timeout_retry
 
+# TODO(jbudorick) Remove once the DeviceUtils implementations are no longer
+#                 backed by AndroidCommands / android_testrunner.
+sys.path.append(os.path.join(constants.DIR_SOURCE_ROOT, 'third_party',
+                             'android_testrunner'))
+import errors as old_errors
+
 
 def _TimeoutRetryWrapper(f, timeout_func, retries_func):
   @functools.wraps(f)
   def TimeoutRetryWrapper(*args, **kwargs):
     timeout = timeout_func(*args, **kwargs)
     retries = retries_func(*args, **kwargs)
     def impl():
       return f(*args, **kwargs)
     try:
       return timeout_retry.Run(impl, timeout, retries)
+    except old_errors.WaitForResponseTimedOutError as e:
+      raise device_errors.CommandTimeoutError(str(e))
+    except old_errors.DeviceUnresponsiveError as e:
+      raise device_errors.DeviceUnreachableError(str(e))
     except reraiser_thread.TimeoutError as e:
       raise device_errors.CommandTimeoutError(str(e))
   return TimeoutRetryWrapper
 
 
 def WithTimeoutAndRetries(f):
   """A decorator that handles timeouts and retries."""
   get_timeout = lambda *a, **kw: kw['timeout']
   get_retries = lambda *a, **kw: kw['retries']
   return _TimeoutRetryWrapper(f, get_timeout, get_retries)
@@ skipping 27 matching lines @@
   A decorator that handles timeouts and retries using instance defaults.
   """
   def decorator(f):
     def get_timeout(inst, *_args, **kwargs):
       return kwargs.get('timeout', getattr(inst, default_timeout_name))
     def get_retries(inst, *_args, **kwargs):
       return kwargs.get('retries', getattr(inst, default_retries_name))
     return _TimeoutRetryWrapper(f, get_timeout, get_retries)
   return decorator