Add browser backend property to browser

telemetry/telemetry/internal/browser/browser.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.
 
 import logging
 import sys
 
 from py_utils import cloud_storage  # pylint: disable=import-error
 
 from telemetry.core import exceptions
@@ skipping 380 matching lines @@
     except Exception: # pylint: disable=broad-except
       logging.exception('Failed to get browser standard output:')
     logging.info('*********** END OF BROWSER STANDARD OUTPUT ************')
 
     logging.info('********************* BROWSER LOG *********************')
     try:
       logging.info(self.GetLogFileContents())
     except Exception: # pylint: disable=broad-except
       logging.exception('Failed to get browser log:')
     logging.info('***************** END OF BROWSER LOG ******************')
+
+  @property
+  def browser_backed(self):
+    return self._browser_backend