Basic android app implementation

tools/telemetry/telemetry/core/app.py

 # Copyright 2012 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.
 
 
 class App(object):
   """ A running application instance that can be controlled in a limited way.
 
   Be sure to clean up after yourself by calling Close() when you are done with
   the app. Or better yet:
     with possible_app.Create(options) as app:
       ... do all your operations on app here
   """
   def __init__(self, app_backend, platform_backend):
     assert platform_backend.platform != None
 
     self._app_backend = app_backend
     self._platform_backend = platform_backend
 
   @property
+  def app_backend(self):
+    return self._app_backend
+
+  @property
   def app_type(self):
-    return self._app_backend.app_type
+    return self.app_backend.app_type
 
   @property
   def platform(self):
     return self._platform_backend.platform
 
   def __enter__(self):
     return self
 
   def __exit__(self, *args):
     self.Close()
 
   def Close(self):
     raise NotImplementedError()
 
   def GetStandardOutput(self):
     return self._app_backend.GetStandardOutput()
 
   def GetStackTrace(self):
     return self._app_backend.GetStackTrace()