Add a slimming paint variant of the rasterize and record micro benchmark

tools/perf/benchmarks/rasterize_and_record_micro.py

 # Copyright 2013 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 measurements import rasterize_and_record_micro
 import page_sets
 from telemetry import benchmark
 
 
 class _RasterizeAndRecordMicro(benchmark.Benchmark):
@@ skipping 21 matching lines @@
 
   @classmethod
   def Name(cls):
     return 'rasterize_and_record_micro'
 
   def CreatePageTest(self, options):
     return rasterize_and_record_micro.RasterizeAndRecordMicro(
         options.start_wait_time, options.rasterize_repeat,
         options.record_repeat, options.timeout, options.report_detailed_results)
 
+
 # RasterizeAndRecord disabled on mac because of crbug.com/350684.
 # RasterizeAndRecord disabled on windows because of crbug.com/338057.
 @benchmark.Disabled('mac', 'win')
 class RasterizeAndRecordMicroTop25(_RasterizeAndRecordMicro):
   """Measures rasterize and record performance on the top 25 web pages.
 
   http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
   page_set = page_sets.Top25PageSet
 
   @classmethod
   def Name(cls):
     return 'rasterize_and_record_micro.top_25_smooth'
 
 
+# RasterizeAndRecord disabled on mac because of crbug.com/350684.
+# RasterizeAndRecord disabled on windows because of crbug.com/338057.
+@benchmark.Disabled('mac', 'win')
+@benchmark.Disabled('reference')
+class RasterizeAndRecordMicroTop25WithSlimmingPaint(_RasterizeAndRecordMicro):
+  """Measures rasterize and record performance with --enable-slimming-paint.
+
+  http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
+  page_set = page_sets.Top25PageSet
+
+  def CustomizeBrowserOptions(self, options):
+    options.AppendExtraBrowserArgs(['--enable-slimming-paint'])
+
+  @classmethod
+  def Name(cls):
+    return 'rasterize_and_record_micro.top_25_slimming_paint_smooth'
+
+
 @benchmark.Disabled('mac', 'win')
 class RasterizeAndRecordMicroKeyMobileSites(_RasterizeAndRecordMicro):
   """Measures rasterize and record performance on the key mobile sites.
 
   http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
   page_set = page_sets.KeyMobileSitesPageSet
 
   @classmethod
   def Name(cls):
     return 'rasterize_and_record_micro.key_mobile_sites_smooth'
@@ skipping 18 matching lines @@
   """Measures rasterize and record performance on the Polymer cases.
 
   http://www.chromium.org/developers/design-documents/rendering-benchmarks"""
 
   @classmethod
   def Name(cls):
     return 'rasterize_and_record_micro.polymer'
 
   def CreatePageSet(self, options):
     return page_sets.PolymerPageSet(run_no_page_interactions=True)