Propagate this-specialization to regular (megamorphic) calls

runtime/vm/aot_optimizer.cc

Index: runtime/vm/aot_optimizer.cc
diff --git a/runtime/vm/aot_optimizer.cc b/runtime/vm/aot_optimizer.cc
index 35c50b616ff395855bea70233bf6018e21b31e85..e0d17d0ae57519f66d3836acc8be8598b8d76676 100644
--- a/runtime/vm/aot_optimizer.cc
+++ b/runtime/vm/aot_optimizer.cc
@@ -295,8 +295,9 @@ const ICData& AotOptimizer::TrySpecializeICData(const ICData& ic_data,
     return ic_data;  // Nothing to do
   }
 
+  intptr_t count = 1;
   const Function& function =
-      Function::Handle(Z, ic_data.GetTargetForReceiverClassId(cid));
+      Function::Handle(Z, ic_data.GetTargetForReceiverClassId(cid, &count));
   // TODO(fschneider): Try looking up the function on the class if it is
   // not found in the ICData.
   if (!function.IsNull()) {