add getVisitsPaginated; disable onScrollChange

packages/flutter_mozilla_components/pigeons/gecko.dart

@@ -1226,7 +1226,7 @@ abstract class GeckoStateEvents {
   void onFindResults(int timestamp, String id, List<FindResultState> results);
   void onLongPress(int timestamp, String id, HitResult hitResult);
 
-  void onScrollChange(int timestamp, String tabId, int scrollY);
+  // void onScrollChange(int timestamp, String tabId, int scrollY);
   void onPreferenceChange(int timestamp, GeckoPref value);
 
   void onContainerSiteAssignment(
@@ -1340,6 +1340,13 @@ abstract class GeckoHistoryApi {
     List<VisitType> excludeTypes,
   );
 
+  @async
+  List<VisitInfo> getVisitsPaginated(
+    int offset,
+    int count,
+    List<VisitType> excludeTypes,
+  );
+
   @async
   void deleteVisit(String url, int timestamp);