Added swarming step to the Blink trybots

scripts/slave/recipe_modules/chromium_tests/api.py

Index: scripts/slave/recipe_modules/chromium_tests/api.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/api.py b/scripts/slave/recipe_modules/chromium_tests/api.py
index c13a16628623d5e47468a90d4d6c19576550c9a5..877d95a880d05778261a6387071bdc913edf1e63 100644
--- a/scripts/slave/recipe_modules/chromium_tests/api.py
+++ b/scripts/slave/recipe_modules/chromium_tests/api.py
@@ -467,6 +467,36 @@ class ChromiumTestsApi(recipe_api.RecipeApi):
 
     return True, self.m.filter.matching_exes, compile_targets
 
+  def configure_swarming(self, project_name, precommit):
+    """Configures default swarming dimensions and tags.
+
+    Args:
+      project_name: Lowercase name of the project, e.g. "blink", "chromium".
+      precommit: Boolean flag to indicate whether the tests are running before
+          the changes are commited.
+    """
+    self.m.swarming.set_default_dimension('pool', 'Chrome')
+    self.m.swarming.add_default_tag('project:%s' % project_name)
+    self.m.swarming.default_idempotent = True
+
+    if precommit:
+      self.m.swarming.add_default_tag('purpose:pre-commit')
+      requester = self.m.properties.get('requester')

[Ken Russell (switch to Gerrit), 2014/10/29 19:16:16]

Wow. One of the tests of the "requester" build property has been broken all
along due to a typo ("requestor").

[Sergiy Byelozyorov, 2014/10/29 20:04:24]

Yeah. I've actually grepped whole repo for "requestor" to make sure there are no
other places with this typo.

+      if requester == 'commit-bot@chromium.org':
+        self.m.swarming.default_priority = 30
+        self.m.swarming.add_default_tag('purpose:CQ')
+        blamelist = self.m.properties.get('blamelist')
+        if len(blamelist) == 1:
+          requester = blamelist[0]
+      else:
+        self.m.swarming.default_priority = 50
+        self.m.swarming.add_default_tag('purpose:ManualTS')
+      self.m.swarming.default_user = requester
+    else:
+      self.m.swarming.add_default_tag('purpose:post-commit')
+      self.m.swarming.add_default_tag('purpose:CI')
+      self.m.swarming.default_priority = 25
+
   # Used to build the Google Storage archive url.
   #
   # We need to special-case the logic for composing the archive url for a couple