Add build slave side support for the new swarming.py script.

scripts/slave/swarming/trigger_swarm.py

Index: scripts/slave/swarming/trigger_swarm.py
diff --git a/scripts/slave/swarming/trigger_swarm.py b/scripts/slave/swarming/trigger_swarm.py
index a1eb49e22137865b51bbef1d4f72514a316a07a7..97c1de53ee999bfd92e73024e169280068a39c0d 100755
--- a/scripts/slave/swarming/trigger_swarm.py
+++ b/scripts/slave/swarming/trigger_swarm.py
@@ -50,22 +50,30 @@ def v0(client, options):
   return subprocess.call(cmd, cwd=client)
 
 
-def v1(client, options):
-  """Adds --priority support in r217581."""
+def v0_1(client, options):
+  """Code starting around r218375.
+
+  TODO(maruel): Put exact revision once committe.d
+  """
   cmd = [
     sys.executable,
-    os.path.join(client, 'swarm_trigger_step.py'),
-    '--swarm-url', options.swarming,
-    '--data-server', options.isolate_server,
-    '--os_image', options.os,
-    '--test-name-prefix', options.prefix,
+    os.path.join(client, 'swarming.py'),
+    'trigger',
+    '--swarming', options.swarming,
+    '--isolate-server', options.isolate_server,
+    '--os', options.os,
+    '--task-prefix', options.prefix,
     '--priority', str(PRIORITIES[options.type]),
   ]
 
   for i in options.tasks:
-    cmd.append('--run_from_hash')
+    cmd.append('--tasks')
     cmd.extend(i)
 
+  # Enable profiling on the -dev server.
+  if '-dev' in options.swarming:
+    cmd.append('--profile')
+
   print ' '.join(cmd)
   return subprocess.call(cmd, cwd=client)
 
@@ -73,8 +81,10 @@ def v1(client, options):
 def determine_version_and_run_handler(client, options):
   """Executes the proper handler based on the code layout and --version support.
   """
-  # TODO(maruel): Determine version.
-  return v0(client, options)
+  if os.path.isfile(os.path.join(client, 'swarm_get_results.py')):
+    # Oh, that's old.
+    return v0(client, options)
+  return v0_1(client, options)
 
 
 def main():
@@ -104,6 +114,8 @@ def main():
   parser.add_option(
       '--type',
       choices=sorted(PRIORITIES),
+      # TODO(maruel): Remove once all masters are restarted.
+      default='tryjob',
       help='Type of job will define it\'s priority')
   parser.add_option(
       '--task', nargs=4, action='append', default=[], dest='tasks')