Add swarming task for upload_dm_results

infra/bots/recipes/upload_nano_results.py

 # Copyright 2016 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.
 
 
 # Recipe for uploading nanobench results.
 
 
 DEPS = [
   'build/file',
   'recipe_engine/path',
   'recipe_engine/properties',
   'recipe_engine/step',
   'recipe_engine/time',
 ]
 
 
 def RunSteps(api):
   # Upload the nanobench resuls.
   builder_name = api.properties['buildername']
-  issue = str(api.properties.get('issue'))
-  patchset = str(api.properties.get('patchset'))
+  issue = str(api.properties.get('issue', ''))
+  patchset = str(api.properties.get('patchset', ''))
 
   now = api.time.utcnow()
 
   src_path = api.path['cwd'].join(
       'perfdata', builder_name, 'data')
   results = api.file.glob(
       'find results',
       'nanobench*.json',
       cwd=src_path,
       test_data=['nanobench_abc123.json'],
@@ skipping 31 matching lines @@
 
   builder = 'Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Debug-Trybot'
   yield (
     api.test('trybot') +
     api.properties(buildername=builder,
                    revision='abc123',
                    path_config='kitchen',
                    issue='12345',
                    patchset='1002')
   )