Add telemetry test for paper calculator hit testing performance.

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 benchmarks import silk_flags
 from measurements import thread_times
 import page_sets
 from telemetry import benchmark
 
 class _ThreadTimes(benchmark.Benchmark):
   @classmethod
   def AddBenchmarkCommandLineArgs(cls, parser):
     parser.add_option('--report-silk-details', action='store_true',
                       help='Report details relevant to silk.')
 
   def CreatePageTest(self, options):
     return thread_times.ThreadTimes(options.report_silk_details)
 
 
 @benchmark.Enabled('android')
 class ThreadTimesKeySilkCases(_ThreadTimes):
   """Measures timeline metrics while performing smoothness action on key silk
   cases."""
   page_set = page_sets.KeySilkCasesPageSet
 
+@benchmark.Enabled('android')
+class ThreadTimesKeyHitTestCases(_ThreadTimes):
+  """Measure timeline metrics while performing smoothness action on key hit
+  testing cases."""
+  page_set = page_sets.KeyHitTestCasesPageSet
 
 @benchmark.Disabled
 class LegacySilkBenchmark(ThreadTimesKeySilkCases):
   """Same as thread_times.key_silk_cases but with the old name."""
   @classmethod
   def GetName(cls):
     return "silk.key_silk_cases"
 
 
 @benchmark.Enabled('android')
@@ skipping 19 matching lines @@
   http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
   page_set = page_sets.ToughCompositorCasesPageSet
   def CustomizeBrowserOptions(self, options):
     silk_flags.CustomizeBrowserOptionsForSoftwareRasterization(options)
 
 @benchmark.Enabled('android')
 class ThreadTimesPolymer(_ThreadTimes):
   """Measures timeline metrics while performing smoothness action on
   Polymer cases."""
   page_set = page_sets.PolymerPageSet