Added swarming step to the Blink trybots

scripts/slave/recipes/chromium_trybot.py

Index: scripts/slave/recipes/chromium_trybot.py
diff --git a/scripts/slave/recipes/chromium_trybot.py b/scripts/slave/recipes/chromium_trybot.py
index 5861131f6b02fd208e4dab6a103191044a0a6ae6..a8f45df88d0fbde5ef9611090ae06ac53419f933 100644
--- a/scripts/slave/recipes/chromium_trybot.py
+++ b/scripts/slave/recipes/chromium_trybot.py
@@ -606,19 +606,6 @@ def find_test_named(test_name, tests):
   return [test for test in tests if test.name == test_name]
 
 
-def build_to_priority(build_properties):
-  """Returns the Swarming task priority for the build.
-
-  Does this by determining the build type. Lower is higher priority.
-  """
-  requester = build_properties.get('requester')
-  if requester == 'commit-bot@chromium.org':
-    # Commit queue job.
-    return 30
-  # Normal try job.
-  return 50
-
-
 def GenSteps(api):
   def swarming_shards_from_test_spec(test_spec, test_name):
     if isinstance(test_spec, dict):
@@ -908,22 +895,7 @@ def GenSteps(api):
   mastername = api.properties.get('mastername')
   buildername = api.properties.get('buildername')
   bot_config = get_bot_config(mastername, buildername)
-  api.swarming.set_default_dimension('pool', 'Chrome')
-  api.swarming.default_priority = build_to_priority(api.properties)
-  api.swarming.add_default_tag('project:chromium')
-  api.swarming.add_default_tag('purpose:pre-commit')
-  api.swarming.default_idempotent = True
-
-  # Differentiate between try jobs and CQ jobs. Always find out who made the CL.
-  requestor = api.properties.get('requestor')
-  if requestor == 'commit-bot@chromium.org':
-    api.swarming.add_default_tag('purpose:CQ')
-    blamelist = api.properties.get('blamelist')
-    if len(blamelist) == 1:
-      requestor = blamelist[0]
-  else:
-    api.swarming.add_default_tag('purpose:ManualTS')
-  api.swarming.default_user = requestor
+  api.chromium_tests.configure_swarming('chromium')
 
   # TODO(phajdan): uncomment once we have XP or 10.6 trybots.
   #os_dimension = bot_config.get('swarming_dimensions', {}).get('os')