Revert of [Telemetry] Temporarily disable clock domain test.

tools/perf/measurements/clock_domain_test.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.
 
 from telemetry import benchmark
 from telemetry.testing import tab_test_case
 from telemetry.timeline import trace_data
 from telemetry.timeline import tracing_config
 
 def GetSyncEvents(trace_part):
   return [x for x in trace_part if x['ph'] == 'c']
 
 class ClockDomainTest(tab_test_case.TabTestCase):
 
   # Don't run this test on Android; it's not supposed to work on Android
   # (since when doing Android tracing there are two different devices,
   # so the clock domains will be different)
-  # TODO(rnephew): Revert change from android to all once
-  # https://codereview.chromium.org/2741533003/ lands.
-  @benchmark.Disabled('all')
+  @benchmark.Disabled('android')
   def testTelemetryUsesChromeClockDomain(self):
 
     tracing_controller = self._browser.platform.tracing_controller
     options = tracing_config.TracingConfig()
     options.enable_chrome_trace = True
     tracing_controller.StartTracing(options)
 
     full_trace = tracing_controller.StopTracing()
     chrome_sync = GetSyncEvents(
         full_trace.GetTraceFor(trace_data.CHROME_TRACE_PART)['traceEvents'])
     telemetry_sync = GetSyncEvents(
         full_trace.GetTraceFor(trace_data.TELEMETRY_PART)['traceEvents'])
 
     assert len(chrome_sync) == 1
     assert len(telemetry_sync) == 1
 
     # If Telemetry and Chrome are in the same clock domain, the Chrome sync
     # timestamp should be between Telemetry's sync start and end timestamps.
     ts_telemetry_start = telemetry_sync[0]['args']['issue_ts']
     ts_chrome = chrome_sync[0]['ts']
     ts_telemetry_end = telemetry_sync[0]['ts']
     assert ts_chrome > ts_telemetry_start
     assert ts_telemetry_end > ts_chrome