[wasm] serialization: updated external APIs.

include/v8.h

Index: include/v8.h
diff --git a/include/v8.h b/include/v8.h
index 69bf17c33e5c901609e76e4af509c970cac5aab5..67110c619355526e8a0208517847f89ed1170cd8 100644
--- a/include/v8.h
+++ b/include/v8.h
@@ -18,6 +18,7 @@
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
+#include <memory>
 #include <utility>
 #include <vector>
 
@@ -3462,6 +3463,19 @@ class V8_EXPORT Proxy : public Object {
   static void CheckCast(Value* obj);
 };
 
+class V8_EXPORT WasmCompiledModule : public Object {
+ public:
+  typedef std::pair<std::unique_ptr<const uint8_t[]>, size_t> SerializedModule;
+
+  SerializedModule Serialize();
+  static MaybeLocal<WasmCompiledModule> Deserialize(
+      Isolate* isolate, const SerializedModule serialized_data);
+  V8_INLINE static WasmCompiledModule* Cast(Value* obj);
+
+ private:
+  WasmCompiledModule();
+  static void CheckCast(Value* obj);
+};
 
 #ifndef V8_ARRAY_BUFFER_INTERNAL_FIELD_COUNT
 // The number of required internal fields can be defined by embedder.
@@ -8562,6 +8576,12 @@ Proxy* Proxy::Cast(v8::Value* value) {
   return static_cast<Proxy*>(value);
 }
 
+WasmCompiledModule* WasmCompiledModule::Cast(v8::Value* value) {
+#ifdef V8_ENABLE_CHECKS
+  CheckCast(value);
+#endif
+  return static_cast<WasmCompiledModule*>(value);
+}
 
 Promise::Resolver* Promise::Resolver::Cast(v8::Value* value) {
 #ifdef V8_ENABLE_CHECKS