Moving yahoo_sport into pathological pageset and adding sync scroll.

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 1d832b7e589b0c7492d705165f90093ce37416a4..8b12daa0db2952ef5e0dd518c9003c0ee1d5aaf3 100644
--- a/tools/perf/benchmarks/smoothness.py
+++ b/tools/perf/benchmarks/smoothness.py
@@ -260,3 +260,19 @@ class SmoothnessPathologicalMobileSites(benchmark.Benchmark):
   @classmethod
   def Name(cls):
     return 'smoothness.pathological_mobile_sites'
+
+
+@benchmark.Enabled('android')
+class SmoothnessSyncScrollPathologicalMobileSites(benchmark.Benchmark):
+  """Measures task execution statistics while sync-scrolling pathological sites.
+  """
+  tag = 'sync_scroll'
+  test = smoothness.Smoothness
+  page_set = page_sets.PathologicalMobileSitesPageSet
+
+  def CustomizeBrowserOptions(self, options):
+    silk_flags.CustomizeBrowserOptionsForSyncScrolling(options)
+
+  @classmethod
+  def Name(cls):
+    return 'smoothness.sync_scroll.pathological_mobile_sites'