Creates a new test running script test_runner.py

build/android/pylib/browsertests/dispatch.py

Index: build/android/pylib/browsertests/dispatch.py
diff --git a/build/android/pylib/browsertests/dispatch.py b/build/android/pylib/browsertests/dispatch.py
index ce1bc5acc4be1dbf732a5d86136ae40be2e3051d..165f68ea870f2ad9b35b49ed37d0a990c1a72e58 100644
--- a/build/android/pylib/browsertests/dispatch.py
+++ b/build/android/pylib/browsertests/dispatch.py
@@ -61,9 +61,9 @@ def Dispatch(options):
   # Get tests and split them up based on the number of devices.
   all_enabled = gtest_dispatch.GetAllEnabledTests(RunnerFactory,
                                                   attached_devices)
-  if options.gtest_filter:
+  if options.test_filter:
     all_tests = unittest_util.FilterTestNames(all_enabled,
-                                              options.gtest_filter)
+                                              options.test_filter)
   else:
     all_tests = _FilterTests(all_enabled)
 
@@ -84,6 +84,8 @@ def Dispatch(options):
       flakiness_server=options.flakiness_dashboard_server)
   report_results.PrintAnnotation(test_results)
 
+  return len(test_results.GetNotPass())
+
 def _FilterTests(all_enabled_tests):
   """Filters out tests and fixtures starting with PRE_ and MANUAL_."""
   return [t for t in all_enabled_tests if _ShouldRunOnBot(t)]