SnapManager implementation using V8 Extras - {WIP}

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 cbc6b2bc39709088ae3b2741de68a4492c44bec9..dcb4b3213a2fde264ed2512cda1f7a830fe7bef8 100644
--- a/tools/perf/benchmarks/smoothness.py
+++ b/tools/perf/benchmarks/smoothness.py
@@ -496,3 +496,16 @@ class SmoothnessToughWebGLAdCases(_Smoothness):
   @classmethod
   def ShouldDisable(cls, possible_browser):
     return cls.IsSvelte(possible_browser)  # http://crbug.com/574485
+
+class SmoothnessSnappoints(perf_benchmark.PerfBenchmark):
+  """Measures rendering statistics while scrolling down a page with a large
+  number of snappoints.
+
+  http://www.chromium.org/developers/design-documents/rendering-benchmarks
+  """
+  test = smoothness.Smoothness
+  page_set = page_sets.SnappointsCasesPageSet
+
+  @classmethod
+  def Name(cls):
+    return 'smoothness.snappoints'