Update from https://crrev.com/314320

build/android/pylib/instrumentation/instrumentation_test_instance.py

 # Copyright 2015 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 os
 import pickle
 import re
 import sys
 
@@ skipping 193 matching lines @@
       error_func('Unable to find test JAR: %s' % self._test_jar)
 
     self._test_package = apk_helper.GetPackageName(self.test_apk)
     self._test_runner = apk_helper.GetInstrumentationName(self.test_apk)
 
     self._package_info = None
     for package_info in constants.PACKAGE_INFO.itervalues():
       if self._test_package == package_info.test_package:
         self._package_info = package_info
     if not self._package_info:
-      error_func('Unable to find package info for %s' % self._test_package)
+      logging.warning('Unable to find package info for %s', self._test_package)
 
   def __initializeDataDependencyAttributes(self, args, isolate_delegate):
     self._data_deps = []
     if args.isolate_file_path:
       self._isolate_abs_path = os.path.abspath(args.isolate_file_path)
       self._isolate_delegate = isolate_delegate
       self._isolated_abs_path = os.path.join(
           constants.GetOutDirectory(), '%s.isolated' % self._test_package)
     else:
       self._isolate_delegate = None
@@ skipping 272 matching lines @@
 
   @staticmethod
   def GenerateTestResult(test_name, instr_statuses, start_ms, duration_ms):
     return GenerateTestResult(test_name, instr_statuses, start_ms, duration_ms)
 
   #override
   def TearDown(self):
     if self._isolate_delegate:
       self._isolate_delegate.Clear()