Unittest for page_runner, etc. should suppress output from gtest_progress_reporter

tools/perf/benchmarks/benchmark_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 every benchmark that has a composable measurement.
 
 Ideally this test would be comprehensive, but the above serves as a
 kind of smoke test.
 """
 
@@ skipping 22 matching lines @@
     class SinglePageBenchmark(benchmark):  # pylint: disable=W0232
       def CreatePageSet(self, options):
         # pylint: disable=E1002
         ps = super(SinglePageBenchmark, self).CreatePageSet(options)
         ps.pages = ps.pages[:1]
         return ps
 
     # Set the benchmark's default arguments.
     options = options_for_unittests.GetCopy()
     options.output_format = 'none'
+    options.suppress_gtest_report = True
     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 30 matching lines @@
     if hasattr(benchmark, 'generated_profile_archive'):
       # We'd like to test these, but don't know how yet.
       continue
 
     class BenchmarkSmokeTest(unittest.TestCase):
       pass
     setattr(BenchmarkSmokeTest, benchmark.Name(), SmokeTestGenerator(benchmark))
     suite.addTest(BenchmarkSmokeTest(benchmark.Name()))
 
   return suite