Split swarm_triggered into 3 builders to make it easier on devs.

masters/master.tryserver.chromium/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 # Copyright (c) 2012 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.
 
 # See master.experimental/slaves.cfg for documentation.
 
 
 def expand_extra_builders(extras, total):
@@ skipping 553 matching lines @@
       'os': 'win',
       'version': 'win7',
       'bits': '64',
     } for i in range(3, 6)
   ]
   swarm_slaves = []
   for i in range(511, 520):
     swarm_slaves.extend(
       {
         'master': 'TryServer',
-        'builder': ['swarm_triggered'],
+        'builder': [
+          # Note: they all do the exact same thing, but having different names
+          # makes it easier for developpers.
+          'linux_swarm_triggered',
+          'mac_swarm_triggered',
+          'win_swarm_triggered',
+        ],
         'hostname': 'slave%d-c4' % i,
         'os': 'linux',
         'version': 'precise',
         'bits': '64',
         'subdir': str(j),
       } for j in xrange(20))
 
   win_tsan_slave = [
     {
       'master': 'TryServer',
@@ skipping 47 matching lines @@
       chromeframe_slave +
       gpu_slaves +
       swarm_slaves +
       win_tsan_slave +
       win_x64_slaves +
       swarm_dumb_slaves +
       perf_bisect_slaves)
 
 
 slaves = linux() + mac() + windows() + cros() + android() + ios()