[d8] Use ValueSerializer for postMessage (instead of ad-hoc serializer)

src/messages.h

Index: src/messages.h
diff --git a/src/messages.h b/src/messages.h
index 0d34d0a24aae31b3263f3cbe58a9dc7dd52084dd..0d76cae9648f941b347071100de845335f6462f5 100644
--- a/src/messages.h
+++ b/src/messages.h
@@ -676,6 +676,7 @@ class ErrorUtils : public AllStatic {
   T(AsmJsInstantiated, "Instantiated asm.js: %")                               \
   /* DataCloneError messages */                                                \
   T(DataCloneError, "% could not be cloned.")                                  \
+  T(DataCloneErrorOutOfMemory, "Data cannot be cloned, out of memory.")        \
   T(DataCloneErrorNeuteredArrayBuffer,                                         \
     "An ArrayBuffer is neutered and could not be cloned.")                     \
   T(DataCloneErrorSharedArrayBufferTransferred,                                \