Telemetry: Add a reduced compositor cases page set.

tools/perf/benchmarks/thread_times.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.
 from telemetry import test
 
 from benchmarks import silk_flags
 from measurements import thread_times
 
 
 @test.Disabled('android')  # crbug.com/355952
@@ skipping 16 matching lines @@
   def CustomizeBrowserOptions(self, options):
     silk_flags.CustomizeBrowserOptionsForFastPath(options)
 
 
 class LegacySilkBenchmark(ThreadTimesKeySilkCases):
   """Same as thread_times.key_silk_cases but with the old name."""
   @classmethod
   def GetName(cls):
     return "silk.key_silk_cases"
 
+
 class ThreadTimesFastPathMobileSites(test.Test):
   """Measures timeline metrics while performing smoothness action on
   key mobile sites labeled with fast-path tag.
   http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
   test = thread_times.ThreadTimes
   page_set = 'page_sets/key_mobile_sites.py'
   options = {'page_label_filter' : 'fastpath'}
 
-class LegacyFastPathBenchmark(ThreadTimesFastPathMobileSites):
-  """Same as thread_times.fast_path_mobile_sites but with the old name."""
-  @classmethod
-  def GetName(cls):
-    return "fast_path.key_mobile_sites"
+
+class ThreadTimesCompositorCases(test.Test):
+  """Measures timeline metrics while performing smoothness action on
+  tough compositor cases.
+  http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
+  test = thread_times.ThreadTimes
+  page_set = 'page_sets/tough_compositor_cases.py'
 
 
 @test.Enabled('android')
 class ThreadTimesPolymer(test.Test):
   """Measures timeline metrics while performing smoothness action on
   Polymer cases."""
   test = thread_times.ThreadTimes
   page_set = "page_sets/polymer.py"
   options = { 'report_silk_results': True }