[Android] Fix remote device log parsing.

build/android/pylib/remote/device/remote_device_gtest_run.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.
 
 """Run specific test on specific environment."""
 
 import logging
 import os
 import sys
 
@@ skipping 31 matching lines @@
       runner_package = self.DEFAULT_RUNNER_PACKAGE
       logging.info('Using default runner package: %s',
                     self.DEFAULT_RUNNER_TYPE)
     else:
       runner_package = self._env.runner_package
 
     self._test_id = self._UploadTestToDevice(runner_type)
     config_body = {'runner': runner_package}
     self._SetTestConfig(runner_type, config_body)
 
+  _INSTRUMENTATION_STREAM_LEADER = 'INSTRUMENTATION_STATUS: stream='
+
   #override
   def _ParseTestResults(self):
     logging.info('Parsing results from stdout.')
     output = self._results['results']['output'].splitlines()
+    output = (l[len(self._INSTRUMENTATION_STREAM_LEADER):] for l in output
+              if l.startswith(self._INSTRUMENTATION_STREAM_LEADER))
     results_list = self._test_instance.ParseGTestOutput(output)
     results = base_test_result.TestRunResults()
     results.AddResults(results_list)
     return results