smoothness.scrolling_tough_ad_cases to use browser driven scrolls

tools/perf/page_sets/repeatable_synthesize_scroll_gesture_shared_state.py

Index: tools/perf/page_sets/repeatable_synthesize_scroll_gesture_shared_state.py
diff --git a/tools/perf/page_sets/fling_gesture_supported_shared_state.py b/tools/perf/page_sets/repeatable_synthesize_scroll_gesture_shared_state.py
similarity index 52%
copy from tools/perf/page_sets/fling_gesture_supported_shared_state.py
copy to tools/perf/page_sets/repeatable_synthesize_scroll_gesture_shared_state.py
index afcdcde542b85aca4529aa526fabc242648bf2f3..d97f7e0dbd1bb0c56953f19eede8109213ed59d8 100644
--- a/tools/perf/page_sets/fling_gesture_supported_shared_state.py
+++ b/tools/perf/page_sets/repeatable_synthesize_scroll_gesture_shared_state.py
@@ -6,11 +6,12 @@ import logging
 from telemetry.page import shared_page_state
 
 
-class FlingGestureSupportedSharedState(
-    shared_page_state.Shared10InchTabletPageState):
+class RepeatableSynthesizeScrollGestureSharedState(
+    shared_page_state.SharedPageState):
 
   def CanRunOnBrowser(self, browser_info, _):
-    if not browser_info.HasFlingGestureSupport():
-      logging.warning('Browser does not support fling gestures, skipping test')
+    if not browser_info.HasRepeatableSynthesizeScrollGesture():
+      logging.warning('Browser does not support repeatable scroll gestures, '
+                      'skipping test')
       return False
     return True