[Android] Remove chromium version of devil.

build/android/devil/utils/watchdog_timer.py

-# Copyright 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.
-
-"""WatchdogTimer timeout objects."""
-
-import time
-
-
-class WatchdogTimer(object):
-  """A resetable timeout-based watchdog.
-
-  This object is threadsafe.
-  """
-
-  def __init__(self, timeout):
-    """Initializes the watchdog.
-
-    Args:
-      timeout: The timeout in seconds. If timeout is None it will never timeout.
-    """
-    self._start_time = time.time()
-    self._timeout = timeout
-
-  def Reset(self):
-    """Resets the timeout countdown."""
-    self._start_time = time.time()
-
-  def GetElapsed(self):
-    """Returns the elapsed time of the watchdog."""
-    return time.time() - self._start_time
-
-  def GetRemaining(self):
-    """Returns the remaining time of the watchdog."""
-    if self._timeout:
-      return self._timeout - self.GetElapsed()
-    else:
-      return None
-
-  def IsTimedOut(self):
-    """Whether the watchdog has timed out.
-
-    Returns:
-      True if the watchdog has timed out, False otherwise.
-    """
-    remaining = self.GetRemaining()
-    return remaining is not None and remaining < 0