[tools/perf] Disable output format on benchmark_smoke_unittest & system_health_smoke_test

tools/perf/benchmarks/benchmark_smoke_unittest.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.
 
 """Run the first page of one benchmark for every module.
 
 Only benchmarks that have a composable measurement are included.
 Ideally this test would be comprehensive, however, running one page
 of every benchmark would run impractically long.
 """
@@ skipping 42 matching lines @@
       def CreateStorySet(self, options):
         # pylint: disable=super-on-old-class
         story_set = super(SinglePageBenchmark, self).CreateStorySet(options)
         for story in story_set.stories:
           story_set.stories = [story]
           break
         return story_set
 
     # Set the benchmark's default arguments.
     options = options_for_unittests.GetCopy()
-    options.output_format = 'none'
+    options.output_formats = ['none']
     parser = options.CreateParser()
 
     benchmark.AddCommandLineArgs(parser)
     benchmark_module.AddCommandLineArgs(parser)
     benchmark.SetArgumentDefaults(parser)
     options.MergeDefaultValues(parser.get_default_values())
 
     benchmark.ProcessCommandLineArgs(None, options)
     benchmark_module.ProcessCommandLineArgs(None, options)
 
@@ skipping 77 matching lines @@
     MergeDecorators(method, disabled_method_attr, benchmark,
                     disabled_benchmark_attr)
     MergeDecorators(method, enabled_method_attr, benchmark,
                     enabled_benchmark_attr)
 
     setattr(BenchmarkSmokeTest, benchmark.Name(), method)
 
     suite.addTest(BenchmarkSmokeTest(benchmark.Name()))
 
   return suite