[Systrace] Fix systrace clock syncing issue with BattOr.

systrace/profile_chrome/fake_agent_2.py

 # Copyright 2016 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.
 
 import optparse
 import tempfile
 
 from systrace import trace_result
 from systrace import tracing_agents
+from telemetry.timeline import trace_data as trace_data_module
 
 
 class FakeAgent2(object):
   def __init__(self, contents='fake-contents'):
     self.contents = contents
     self.stopped = False
     self.config = None
     self.filename = None
 
   # pylint: disable=unused-argument
@@ skipping 22 matching lines @@
     return False
 
   # pylint: disable=unused-argument, no-self-use
   def RecordClockSyncMarker(self, sync_id, did_record_sync_marker_callback):
     print ('Clock sync marker cannot be recorded since explicit clock sync '
            'is not supported.')
 
   def __repr__(self):
     return 'faketracetwo'
 
+  def CollectAgentTraceData(self, builder):
+    builder.AddTraceFor(trace_data_module.CPU_TRACE_DATA, 'fake-contents')
+
 
 class FakeConfig(tracing_agents.TracingConfig):
   def __init__(self):
     tracing_agents.TracingConfig.__init__(self)
 
 
 # pylint: disable=unused-argument
 def try_create_agent(config):
   return FakeAgent2()
 
 def add_options(parser):
   options = optparse.OptionGroup(parser, 'Fake options.')
   return options
 
 # pylint: disable=unused-argument
 def get_config(options):
   return FakeConfig()