Cleanup machine based on the state in configuration file for mini installer test.

chrome/test/mini_installer/process.py

+# Copyright 2017 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.
+
+import chrome_helper
+import entry
+
+class Process(entry.Entry):
+  """ Visitor for Processes entry in property.
+  """
+  def __init__(self, variable_expander, visitor):
+    super(Process, self).__init__(variable_expander, visitor)
+    self.process_path = None
+    self.is_running = None
+    self.should_process_run = None
+
+  def Check(self, entry_name, entry_value):
+    """ Check whether a process is running or not.
+
+        Args:
+          'entry_name' - A string represents the path to the process being
+                         verified.
+          'entry_value' - A dictionary with the following key and value:
+                          'running': a boolean indicating whether the process
+                          should be running.
+    """
+    running_process_paths = [path for (_, path) in
+                             chrome_helper.GetProcessIDAndPathPairs()]
+    self.process_path = self._variable_expander.Expand(entry_name)
+    self.is_running = self.process_path in running_process_paths
+    self.should_process_run = entry_value['running']
+    self._visitor.VisitProcess(self)