| Index: tools/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent_unittest.py
 | 
| diff --git a/tools/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent_unittest.py b/tools/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent_unittest.py
 | 
| index 7c44845f97c8cbb0d6593606df4485f0e00faae5..d6487a216126dd5926ea719df79a2f4bb49d2dc2 100644
 | 
| --- a/tools/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent_unittest.py
 | 
| +++ b/tools/telemetry/telemetry/internal/platform/tracing_agent/chrome_tracing_agent_unittest.py
 | 
| @@ -21,7 +21,7 @@ class FakePlatformBackend(object):
 | 
|  
 | 
|  class FakeAndroidPlatformBackend(FakePlatformBackend):
 | 
|    def __init__(self):
 | 
| -    devices = device_utils.DeviceUtils.HealthyDevices()
 | 
| +    devices = device_utils.DeviceUtils.HealthyDevices(None)
 | 
|      self.device = devices[0]
 | 
|  
 | 
|    def GetOSName(self):
 | 
| 
 |