Add step to process Render Test results.

scripts/slave/recipe_modules/chromium_tests/steps.py

Index: scripts/slave/recipe_modules/chromium_tests/steps.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/steps.py b/scripts/slave/recipe_modules/chromium_tests/steps.py
index d0697c0fc2d9f3f4ee81580ebc25c0e61ff3148e..d6aea15ed03faa306eed808847db19754e2645e6 100644
--- a/scripts/slave/recipe_modules/chromium_tests/steps.py
+++ b/scripts/slave/recipe_modules/chromium_tests/steps.py
@@ -1589,7 +1589,8 @@ class AndroidInstrumentationTest(AndroidTest):
                test_apk=None, isolate_file_path=None, timeout_scale=None,
                annotation=None, except_annotation=None, screenshot=False,
                verbose=True, tool=None, additional_apks=None,
-               store_tombstones=False, result_details=False):
+               store_tombstones=False, result_details=False,
+               render_results_dir=None):
     suite_defaults = (
         AndroidInstrumentationTest._DEFAULT_SUITES.get(name)
         or AndroidInstrumentationTest._DEFAULT_SUITES_BY_TARGET.get(name)
@@ -1617,6 +1618,7 @@ class AndroidInstrumentationTest(AndroidTest):
     self._wrapper_script_suite_name = compile_targets[0]
     self._store_tombstones = store_tombstones
     self._result_details = result_details
+    self._render_results_dir = render_results_dir
 
   @property
   def uses_local_devices(self):
@@ -1640,6 +1642,7 @@ class AndroidInstrumentationTest(AndroidTest):
         result_details=self._result_details,
         store_tombstones=self._store_tombstones,
         wrapper_script_suite_name=self._wrapper_script_suite_name,
+        render_results_dir=self._render_results_dir,
         step_test_data=lambda: api.test_utils.test_api.canned_gtest_output(False))