Reland of Track telemetry benchmark cycle time

telemetry/telemetry/testing/fakes/__init__.py

Index: telemetry/telemetry/testing/fakes/__init__.py
diff --git a/telemetry/telemetry/testing/fakes/__init__.py b/telemetry/telemetry/testing/fakes/__init__.py
index 71d1d2afb6ba99a207af3ffd1f13c479295b8efb..97c63604717d8cda7e22f659a3991fb00a68a3b3 100644
--- a/telemetry/telemetry/testing/fakes/__init__.py
+++ b/telemetry/telemetry/testing/fakes/__init__.py
@@ -56,13 +56,13 @@ class FakePlatform(object):
     return False
 
   def GetDeviceTypeName(self):
-    raise NotImplementedError
+    return 'FakeDevice'
 
   def GetArchName(self):
     raise NotImplementedError
 
   def GetOSName(self):
-    raise NotImplementedError
+    return 'FakeOS'
 
   def GetOSVersionName(self):
     raise NotImplementedError
@@ -302,6 +302,9 @@ class _FakeTracingController(object):
   def ClearStateIfNeeded(self):
     pass
 
+  def IsChromeTracingSupported(self):
+    return True
+
 
 class _FakeNetworkController(object):
   def __init__(self):