Enable bleeding edge rendering fast paths for Silk benchmarks

tools/perf/benchmarks/smoothness.py

Index: tools/perf/benchmarks/smoothness.py
diff --git a/tools/perf/benchmarks/smoothness.py b/tools/perf/benchmarks/smoothness.py
index e6e5a1867f2d301c9139b7963eb32f4a3049d8bb..6f9bbfc7660eeba9d712e0b02bd6f3ff915d02d9 100644
--- a/tools/perf/benchmarks/smoothness.py
+++ b/tools/perf/benchmarks/smoothness.py
@@ -2,6 +2,7 @@
 # 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 smoothness
 from telemetry import test
 
@@ -41,6 +42,17 @@ class SmoothnessKeySilkCases(test.Test):
   page_set = 'page_sets/key_silk_cases.json'
 
 
+class SmoothnessFastPathKeySilkCases(test.Test):
+  """Measures rendering statistics for the key silk cases without GPU
+  rasterization using bleeding edge rendering fast paths.
+  """
+  tag = 'fast_path'
+  test = smoothness.Smoothness
+  page_set = 'page_sets/key_silk_cases.json'
+  def CustomizeBrowserOptions(self, options):
+    silk_flags.CustomizeBrowserOptionsForFastPath(options)
+
+
 class SmoothnessGpuRasterizationTop25(test.Test):
   """Measures rendering statistics for the top 25 with GPU rasterization
   """
@@ -81,6 +93,20 @@ class SmoothnessGpuRasterizationKeySilkCases(test.Test):
     options.AppendExtraBrowserArgs('--enable-gpu-rasterization')
 
 
+class SmoothnessFastPathGpuRasterizationKeySilkCases(
+    SmoothnessGpuRasterizationKeySilkCases):
+  """Measures rendering statistics for the key silk cases with GPU rasterization
+  using bleeding edge rendering fast paths.
+  """
+  tag = 'fast_path_gpu_rasterization'
+  test = smoothness.Smoothness
+  page_set = 'page_sets/key_silk_cases.json'
+  def CustomizeBrowserOptions(self, options):
+    super(SmoothnessFastPathGpuRasterizationKeySilkCases, self). \
+        CustomizeBrowserOptions(options)
+    silk_flags.CustomizeBrowserOptionsForFastPath(options)
+
+
 @test.Enabled('android')
 class SmoothnessToughPinchZoomCases(test.Test):
   """Measures rendering statistics for pinch-zooming into the tough pinch zoom