[Telemetry] Add battor tracing agent

telemetry/telemetry/internal/platform/tracing_controller_backend_unittest.py

Index: telemetry/telemetry/internal/platform/tracing_controller_backend_unittest.py
diff --git a/telemetry/telemetry/internal/platform/tracing_controller_backend_unittest.py b/telemetry/telemetry/internal/platform/tracing_controller_backend_unittest.py
index 9460094dd4cc05b03f854b5414d48e9dde745b3e..a5af1cf7829ab37e4f35231b36ba58879d16dca7 100644
--- a/telemetry/telemetry/internal/platform/tracing_controller_backend_unittest.py
+++ b/telemetry/telemetry/internal/platform/tracing_controller_backend_unittest.py
@@ -3,7 +3,7 @@
 # found in the LICENSE file.
 
 import gc
-import logging
+import platform as _platform
 import unittest
 
 from telemetry import decorators
@@ -21,7 +21,16 @@ class PlatformBackend(linux_based_platform_backend.LinuxBasedPlatformBackend):
     self._mock_files = {}
 
   def GetOSName(self):
-    return 'android'
+    if 'Win' in _platform.system():
+      return 'win'
+    elif 'Linux' in _platform.system():
+      return 'android'
+    elif 'Darwin' in _platform.system():
+      return 'mac'
+
+  @property
+  def device(self):
+    return 'string'
 
 
 class FakeTracingAgentBase(tracing_agent.TracingAgent):
@@ -339,9 +348,3 @@ class TracingControllerBackendTest(unittest.TestCase):
     with self.controller._DisableGarbageCollection():
       self.assertFalse(gc.isenabled())
     self.assertTrue(gc.isenabled())
-
-
-if __name__ == '__main__':
-  logging.getLogger().setLevel(logging.DEBUG)
-  unittest.main(verbosity=2)
-