[Telemetry] Explicitly define Name() method for all perf benchmarks

tools/perf/benchmarks/speedometer.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.
 
 """Apple's Speedometer performance benchmark.
 
 Speedometer measures simulated user interactions in web applications.
 
 The current benchmark uses TodoMVC to simulate user actions for adding,
 completing, and removing to-do items. Speedometer repeats the same actions using
@@ skipping 62 matching lines @@
               for(var i = 0; i < benchmarkClient.iterationCount; i++) {
                 suite_times.push(
                     benchmarkClient._measuredValues[i].tests['%s'].total);
               };
               suite_times;
               """ % suite_name), important=False))
 
 class Speedometer(benchmark.Benchmark):
   test = SpeedometerMeasurement
 
+  @classmethod
+  def Name(cls):
+    return 'speedometer'
+
   def CreatePageSet(self, options):
     ps = page_set.PageSet(
         file_path=os.path.abspath(__file__),
         archive_data_file='../page_sets/data/speedometer.json',
         bucket=page_set.PUBLIC_BUCKET)
     ps.AddUserStory(page_module.Page(
         'http://browserbench.org/Speedometer/', ps, ps.base_dir,
         make_javascript_deterministic=False))
     return ps