[tools/perf] Enable many more lint checks for perf directory.

tools/perf/core/benchmark_finders_unittest.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 os
 import unittest
 
 from core import benchmark_finders
 
 
 class TestGetBenchmarkNamesForFile(unittest.TestCase):
 
   def setUp(self):
     self.top_level_dir = os.path.abspath(
         os.path.join(os.path.dirname(__file__), 'test_data'))
 
   def testListSimpleBenchmarksDefinedInOneFile(self):
     self.assertEquals(
         benchmark_finders.GetBenchmarkNamesForFile(
             self.top_level_dir,
             os.path.join(
                 self.top_level_dir,
                 'simple_benchmarks_case.py')),
         ['test_benchmark_1', 'test_benchmark_2', 'test_benchmark_subclass_1',
          'test_benchmark_subclass_2'])
 
-  def testListSimpleBenchmarksDefinedInOneFile(self):
+  def testListSimpleBenchmarksDefinedInOneFileComplex(self):
     self.assertEquals(
         benchmark_finders.GetBenchmarkNamesForFile(
             self.top_level_dir,
             os.path.join(
                 self.top_level_dir,
                 'complex_benchmarks_case.py')),
         ['test_benchmark_complex_1', 'test_benchmark_complex_subclass',
          'test_benchmark_complex_subclass_from_other_module'])