[Telemetry] Enable the sandbox for page cyclers on Windows.

tools/perf/metrics/iometric.py

 # Copyright 2014 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 sys
 
 from metrics import Metric
 from telemetry.value import scalar
 
 
 class IOMetric(Metric):
   """IO-related metrics, obtained via telemetry.core.Browser."""
 
   @classmethod
   def CustomizeBrowserOptions(cls, options):
     # TODO(tonyg): This is the host platform, so not totally correct.
-    if sys.platform != 'darwin':
+    if sys.platform not in ('darwin', 'win32'):
       # TODO(playmobil): Get rid of this on all platforms crbug.com/361049.
       options.AppendExtraBrowserArgs('--no-sandbox')
 
   def Start(self, page, tab):
     raise NotImplementedError()
 
   def Stop(self, page, tab):
     raise NotImplementedError()
 
   def AddResults(self, tab, results):
@@ skipping 36 matching lines @@
       AddSummaryForOperation('WriteOperationCount', 'write_operations_',
                              'count', 'Number of IO write operations.')
       AddSummaryForOperation('ReadTransferCount', 'read_bytes_', 'kb',
                              'Number of IO bytes read.')
       AddSummaryForOperation('WriteTransferCount', 'write_bytes_', 'kb',
                              'Number of IO bytes written.')
 
     AddSummariesForProcessType('Browser', 'browser')
     AddSummariesForProcessType('Renderer', 'renderer')
     AddSummariesForProcessType('Gpu', 'gpu')