[tools/perf] Add --max-values-per-test-case option [fix typos]

Had written these, but forgot to upload before landing:
https://chromium-review.googlesource.com/c/chromium/src/+/1879207

TBR=crouleau@chromium.org

Bug: 1001038
Change-Id: I8794343b81129e18736277bad88c23088e3b18fe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1883722Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Cr-Commit-Position: refs/heads/master@{#709958}

tools/perf/benchmarks/benchmark_smoke_unittest.py

@@ -37,11 +37,11 @@ from benchmarks import v8_browsing
 # data to the chrome perf dashboard. So the smoke tests below cap the max
 # number of values that each story tested would produce when running on the
 # waterfall.
-MAX_VALUES_PERT_TEST_CASE = 1000
+MAX_VALUES_PER_TEST_CASE = 1000
 
 
 def SmokeTestGenerator(benchmark_class, num_pages=1):
-  """Generates a somke test for the first N pages from a benchmark.
+  """Generates a smoke test for the first N pages from a benchmark.
 
   Args:
     benchmark_class: a benchmark class to smoke test.
@@ -70,7 +70,7 @@ def SmokeTestGenerator(benchmark_class, num_pages=1):
           environment=chromium_config.GetDefaultChromiumConfig())
       options.pageset_repeat = 1  # For smoke testing only run the page once.
       options.output_formats = ['histograms']
-      options.max_values_per_test_case = MAX_VALUES_PERT_TEST_CASE
+      options.max_values_per_test_case = MAX_VALUES_PER_TEST_CASE
       return_code = benchmark_class().Run(options)
       if return_code == -1:
         self.skipTest('The benchmark was not run.')

tools/perf/benchmarks/system_health_smoke_test.py

@@ -199,7 +199,7 @@ _DISABLED_TESTS = frozenset({
 # data to the chrome perf dashboard. So the smoke tests below cap the max
 # number of values that each story tested would produce when running on the
 # waterfall.
-MAX_VALUES_PERT_TEST_CASE = 1000
+MAX_VALUES_PER_TEST_CASE = 1000
 
 
 def _GenerateSmokeTestCase(benchmark_class, story_to_smoke_test):
@@ -274,7 +274,7 @@ def GenerateBenchmarkOptions(output_dir, benchmark_cls):
       environment=chromium_config.GetDefaultChromiumConfig())
   options.pageset_repeat = 1  # For smoke testing only run each page once.
   options.output_formats = ['histograms']
-  options.max_values_per_test_case = MAX_VALUES_PERT_TEST_CASE
+  options.max_values_per_test_case = MAX_VALUES_PER_TEST_CASE
 
   # Enable browser logging in the smoke test only. Hopefully, this will detect
   # all crashes and hence remove the need to enable logging in actual perf