[wasm] prototype for breakpoint support.

src/snapshot/code-serializer.cc

Index: src/snapshot/code-serializer.cc
diff --git a/src/snapshot/code-serializer.cc b/src/snapshot/code-serializer.cc
index 4229607c75a2173664ea038bedc0c42a6f4777c3..5443dbba7a918f1f6c65b812b129b6e862808ce3 100644
--- a/src/snapshot/code-serializer.cc
+++ b/src/snapshot/code-serializer.cc
@@ -85,6 +85,7 @@ void CodeSerializer::SerializeObject(HeapObject* obj, HowToCode how_to_code,
       case Code::WASM_FUNCTION:
       case Code::WASM_TO_JS_FUNCTION:
       case Code::JS_TO_WASM_FUNCTION:
+      case Code::WASM_TO_INTERPRETER:
         UNREACHABLE();
     }
     UNREACHABLE();