Remove --no-sandbox flag from command line for telemetry

tools/perf/benchmarks/memory_infra.py

 # Copyright 2015 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 re
 
 from core import perf_benchmark
 
 from telemetry import benchmark
 from telemetry.timeline import tracing_category_filter
 from telemetry.web_perf import timeline_based_measurement
 from telemetry.web_perf.metrics import memory_timeline
 
 import page_sets
 
 
 class _MemoryInfra(perf_benchmark.PerfBenchmark):
   """Base class for new-generation memory benchmarks based on memory-infra.
 
   This benchmark records data using memory-infra (https://goo.gl/8tGc6O), which
   is part of chrome tracing, and extracts it using timeline-based measurements.
   """
 
   def SetExtraBrowserOptions(self, options):
     options.AppendExtraBrowserArgs([
         # TODO(perezju): Temporary workaround to disable periodic memory dumps.
         # See: http://crbug.com/513692
         '--enable-memory-benchmarking',
-        # TODO(ssid): Remove this flag after fixing http://crbug.com/461788.
-        '--no-sandbox'
     ])
 
   def CreateTimelineBasedMeasurementOptions(self):
     # Enable only memory-infra, to get memory dumps, and blink.console, to get
     # the timeline markers used for mapping threads to tabs.
     trace_memory = tracing_category_filter.TracingCategoryFilter(
       filter_string='-*,blink.console,disabled-by-default-memory-infra')
     tbm_options = timeline_based_measurement.Options(
         overhead_level=trace_memory)
     tbm_options.config.enable_android_graphics_memtrack = True
@@ skipping 69 matching lines @@
 # Tracing.requestMemoryDump DevTools API. See http://crbug.com/540022.
 @benchmark.Disabled('reference')
 class MemoryBenchmarkTop10Mobile(_MemoryInfra):
   """Timeline based benchmark for measuring memory on top 10 mobile sites."""
 
   page_set = page_sets.MemoryInfraTop10MobilePageSet
 
   @classmethod
   def Name(cls):
     return 'memory.top_10_mobile'