[debugger] omit exception events for rethrown exceptions in async.

src/interpreter/bytecode-array-builder.h

Index: src/interpreter/bytecode-array-builder.h
diff --git a/src/interpreter/bytecode-array-builder.h b/src/interpreter/bytecode-array-builder.h
index cb3fed9f99a8ff5a29b75dd4aefce22af457aec4..1b1c87dcabc2e67fc18f36dd3c1f6f8a7e5a5369 100644
--- a/src/interpreter/bytecode-array-builder.h
+++ b/src/interpreter/bytecode-array-builder.h
@@ -51,6 +51,8 @@ class BytecodeArrayBuilder final : public ZoneObject {
     return context_register_count_;
   }
 
+  FunctionLiteral* literal() const { return literal_; }
+
   Register first_context_register() const;
   Register last_context_register() const;
 
@@ -360,7 +362,7 @@ class BytecodeArrayBuilder final : public ZoneObject {
   int parameter_count_;
   int local_register_count_;
   int context_register_count_;
-  int return_position_;
+  FunctionLiteral* literal_;
   TemporaryRegisterAllocator temporary_allocator_;
   BytecodeArrayWriter bytecode_array_writer_;
   BytecodePipelineStage* pipeline_;