[Telemetry]Do not run power.idle_platform for reference build runs

tools/perf/core/perf_data_generator.py

 #!/usr/bin/env python
 # Copyright 2016 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.
 
 """Script to generate chromium.perf.json and chromium.perf.fyi.json in
 the src/testing/buildbot directory and benchmark.csv in the src/tools/perf
 directory. Maintaining these files by hand is too unwieldy.
 """
 import argparse
@@ skipping 562 matching lines @@
 
 def generate_cplusplus_isolate_script_test(dimension):
   return [
     generate_isolate_script_entry(
         [get_swarming_dimension(dimension, shard)], [], name, name,
         ignore_task_failure=False)
     for name, shard in dimension['perf_tests']
   ]
 
 
-def generate_telemetry_tests(
-  tester_config, benchmarks, benchmark_sharding_map, use_whitelist):
+def generate_telemetry_tests(tester_config, benchmarks, benchmark_sharding_map,
+                             use_whitelist, benchmark_ref_build_blacklist):
   isolated_scripts = []
   # First determine the browser that you need based on the tester
   browser_name = ''
   if tester_config['platform'] == 'android':
     browser_name = 'android-chromium'
   elif (tester_config['platform'] == 'win'
     and tester_config['target_bits'] == 64):
     browser_name = 'release_x64'
   else:
     browser_name ='release'
@@ skipping 22 matching lines @@
       if device_affinity is None:
         raise Exception('Device affinity for benchmark %s not found'
           % benchmark.Name())
       swarming_dimensions.append(
           get_swarming_dimension(dimension, device_affinity))
 
     test = generate_telemetry_test(
       swarming_dimensions, benchmark.Name(), browser_name)
     isolated_scripts.append(test)
     # Now create another executable for this benchmark on the reference browser
-    reference_test = generate_telemetry_test(
-      swarming_dimensions, benchmark.Name(),'reference')
-    isolated_scripts.append(reference_test)
-    if current_shard == (num_shards - 1):
-      current_shard = 0
-    else:
-      current_shard += 1
+    # if it is not blacklisted from running on the reference browser.
+    if benchmark.Name() not in benchmark_ref_build_blacklist:
+      reference_test = generate_telemetry_test(
+        swarming_dimensions, benchmark.Name(),'reference')
+      isolated_scripts.append(reference_test)
+      if current_shard == (num_shards - 1):
+        current_shard = 0
+      else:
+        current_shard += 1
 
   return isolated_scripts
 
 
 BENCHMARK_NAME_WHITELIST = set([
     u'smoothness.top_25_smooth',
     u'sunspider',
     u'system_health.webview_startup',
     u'page_cycler_v2.intl_hi_ru',
     u'dromaeo.cssqueryjquery',
@@ skipping 17 matching lines @@
 }
 
 # Certain swarming bots are not sharding correctly with the new device affinity
 # algorithm.  Reverting to legacy algorithm to try and get them to complete.
 # See crbug.com/670284
 LEGACY_DEVICE_AFFIINITY_ALGORITHM = [
   'Win Zenbook Perf',
   'Win 10 High-DPI Perf',
 ]
 
+# List of benchmarks that are to never be run with reference builds.
+BENCHMARK_REF_BUILD_BLACKLIST = [
+  'power.idle_platform',
+]
+
+
 def current_benchmarks(use_whitelist):
   benchmarks_dir = os.path.join(src_dir(), 'tools', 'perf', 'benchmarks')
   top_level_dir = os.path.dirname(benchmarks_dir)
 
   all_benchmarks = discover.DiscoverClasses(
       benchmarks_dir, top_level_dir, benchmark_module.Benchmark,
       index_by_class_name=True).values()
   # Remove all blacklisted benchmarks
   for blacklisted in BENCHMARK_NAME_BLACKLIST:
     for benchmark in all_benchmarks:
@@ skipping 80 matching lines @@
     if config.get('swarming', False):
       # Our current configuration only ever has one set of swarming dimensions
       # Make sure this still holds true
       if len(config['swarming_dimensions']) > 1:
         raise Exception('Invalid assumption on number of swarming dimensions')
       # Generate benchmarks
       sharding_map = benchmark_sharding_map
       if name in LEGACY_DEVICE_AFFIINITY_ALGORITHM:
         sharding_map = None
       isolated_scripts = generate_telemetry_tests(
-          config, benchmark_list, sharding_map, use_whitelist)
+          config, benchmark_list, sharding_map, use_whitelist,
+          BENCHMARK_REF_BUILD_BLACKLIST)
       # Generate swarmed non-telemetry tests if present
       if config['swarming_dimensions'][0].get('perf_tests', False):
         isolated_scripts += generate_cplusplus_isolate_script_test(
           config['swarming_dimensions'][0])
       tests[name] = {
         'isolated_scripts': sorted(isolated_scripts, key=lambda x: x['name'])
       }
     else:
       # scripts are only currently run in addition to the main waterfall.  They
       # are currently the only thing generated in the perf json file.
@@ skipping 184 matching lines @@
       return 0
     else:
       print ('The perf JSON config files are not up-to-date. Please run %s '
              'without --validate-only flag to update the perf JSON '
              'configs and benchmark.csv.') % sys.argv[0]
       return 1
   else:
     update_all_tests([fyi_waterfall, waterfall])
     update_benchmark_csv()
   return 0