[wasm][asm.js] Store foreign init function for asm.js as internal field.

src/wasm/wasm-objects.h

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_WASM_OBJECTS_H_
 #define V8_WASM_OBJECTS_H_
 
 #include "src/debug/interface-types.h"
 #include "src/objects-inl.h"
 #include "src/trap-handler/trap-handler.h"
@@ skipping 21 matching lines @@
   DECLARE_GETTER(name, type)
 
 #define DECLARE_OPTIONAL_ACCESSORS(name, type) \
   bool has_##name();                           \
   DECLARE_ACCESSORS(name, type)
 
 // Representation of a WebAssembly.Module JavaScript-level object.
 class WasmModuleObject : public JSObject {
  public:
   // TODO(titzer): add the brand as an internal field instead of a property.
-  enum Fields { kCompiledModule, kFieldCount };
+  enum Fields { kCompiledModule, kAsmForeignInit, kFieldCount };
 
   DECLARE_CASTS(WasmModuleObject);
 
   WasmCompiledModule* compiled_module();
 
   static Handle<WasmModuleObject> New(
       Isolate* isolate, Handle<WasmCompiledModule> compiled_module);
 };
 
 // Representation of a WebAssembly.Table JavaScript-level object.
@@ skipping 401 matching lines @@
   };
 };
 
 #undef DECLARE_ACCESSORS
 #undef DECLARE_OPTIONAL_ACCESSORS
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_WASM_OBJECTS_H_