Creates a new test running script test_runner.py

build/android/pylib/instrumentation/dispatch.py

Index: build/android/pylib/instrumentation/dispatch.py
diff --git a/build/android/pylib/instrumentation/dispatch.py b/build/android/pylib/instrumentation/dispatch.py
index 3f1e37ffac03c81b4cc61725ed1d28c62998b151..d718ea5e9a9aa02a930f8094257c77373e4f7607 100644
--- a/build/android/pylib/instrumentation/dispatch.py
+++ b/build/android/pylib/instrumentation/dispatch.py
@@ -10,6 +10,7 @@ import os
 from pylib import android_commands
 from pylib.base import base_test_result
 from pylib.base import shard
+from pylib.utils import report_results
 
 import test_package
 import test_runner
@@ -25,7 +26,7 @@ def Dispatch(options):
     options: Command line options.
 
   Returns:
-    A TestRunResults object holding the results of the Java tests.
+    Test results in a base_test_result.TestRunResults object.
 
   Raises:
     Exception: when there are no attached devices.
@@ -42,9 +43,9 @@ def Dispatch(options):
   if not attached_devices:
     raise Exception('There are no devices online.')
 
-  if options.device:
-    assert options.device in attached_devices
-    attached_devices = [options.device]
+  if options.test_device:
+    assert options.test_device in attached_devices
+    attached_devices = [options.test_device]
 
   if len(attached_devices) > 1 and options.wait_for_debugger:
     logging.warning('Debugger can not be sharded, using first available device')