| Index: sync/PRESUBMIT.py
 | 
| diff --git a/sync/PRESUBMIT.py b/sync/PRESUBMIT.py
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| index f82e95a5435382c1f912ecfe847d6b7927b7cc62..53c8d45e7959899a7cf4eb493a45fa3ed3ba06bc 100644
 | 
| --- a/sync/PRESUBMIT.py
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| +++ b/sync/PRESUBMIT.py
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| @@ -10,9 +10,13 @@ for more details on the presubmit API built into gcl.
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|  
 | 
|  def GetPreferredTryMasters(project, change):
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|    return {
 | 
| -    'tryserver.chromium': {
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| -      'linux_chromium_rel': set(['defaulttests']),
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| +    'tryserver.chromium.linux': {
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| +      'linux_chromium_rel_swarming': set(['defaulttests']),
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| +    },
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| +    'tryserver.chromium.mac': {
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|        'mac_chromium_rel': set(['defaulttests']),
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| +    },
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| +    'tryserver.chromium.win': {
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|        'win_chromium_rel': set(['defaulttests']),
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|      }
 | 
|    }
 | 
| 
 |