[wasm] Add js-api test and fix property details for some functions.

src/wasm/wasm-js.cc

 // Copyright 2015 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.
 
 #include "src/api-natives.h"
 #include "src/api.h"
 #include "src/asmjs/asm-js.h"
 #include "src/asmjs/asm-typer.h"
 #include "src/asmjs/asm-wasm-builder.h"
 #include "src/assert-scope.h"
@@ skipping 561 matching lines @@
 }
 
 namespace internal {
 
 Handle<JSFunction> InstallFunc(Isolate* isolate, Handle<JSObject> object,
                                const char* str, FunctionCallback func) {
   Handle<String> name = v8_str(isolate, str);
   Handle<FunctionTemplateInfo> temp = NewTemplate(isolate, func);
   Handle<JSFunction> function =
       ApiNatives::InstantiateFunction(temp).ToHandleChecked();
-  PropertyAttributes attributes =
-      static_cast<PropertyAttributes>(DONT_DELETE | READ_ONLY);
+  PropertyAttributes attributes = static_cast<PropertyAttributes>(DONT_ENUM);
   JSObject::AddProperty(object, name, function, attributes);
   return function;
 }
 
 Handle<JSFunction> InstallGetter(Isolate* isolate, Handle<JSObject> object,
                                  const char* str, FunctionCallback func) {
   Handle<String> name = v8_str(isolate, str);
   Handle<FunctionTemplateInfo> temp = NewTemplate(isolate, func);
   Handle<JSFunction> function =
       ApiNatives::InstantiateFunction(temp).ToHandleChecked();
   v8::PropertyAttribute attributes =
-      static_cast<v8::PropertyAttribute>(v8::DontDelete | v8::ReadOnly);
+      static_cast<v8::PropertyAttribute>(v8::DontEnum);
   Utils::ToLocal(object)->SetAccessorProperty(Utils::ToLocal(name),
                                               Utils::ToLocal(function),
                                               Local<Function>(), attributes);
   return function;
 }
 
 void WasmJs::InstallWasmModuleSymbolIfNeeded(Isolate* isolate,
                                              Handle<JSGlobalObject> global,
                                              Handle<Context> context) {
   if (!context->get(Context::WASM_MODULE_SYM_INDEX)->IsSymbol() ||
@@ skipping 81 matching lines @@
   map = isolate->factory()->NewMap(
       i::JS_OBJECT_TYPE, i::JSObject::kHeaderSize +
                              WasmMemoryObject::kFieldCount * i::kPointerSize);
   JSFunction::SetInitialMap(memory_constructor, map, memory_proto);
   JSObject::AddProperty(memory_proto, isolate->factory()->constructor_string(),
                         memory_constructor, DONT_ENUM);
   InstallFunc(isolate, memory_proto, "grow", WebAssemblyMemoryGrow);
   InstallGetter(isolate, memory_proto, "buffer", WebAssemblyMemoryGetBuffer);
 
   // Setup errors
-  attributes = static_cast<PropertyAttributes>(DONT_DELETE | READ_ONLY);
+  attributes = static_cast<PropertyAttributes>(DONT_ENUM);
   Handle<JSFunction> compile_error(
       isolate->native_context()->wasm_compile_error_function());
   JSObject::AddProperty(webassembly, isolate->factory()->CompileError_string(),
                         compile_error, attributes);
   Handle<JSFunction> link_error(
       isolate->native_context()->wasm_link_error_function());
   JSObject::AddProperty(webassembly, isolate->factory()->LinkError_string(),
                         link_error, attributes);
   Handle<JSFunction> runtime_error(
       isolate->native_context()->wasm_runtime_error_function());
@@ skipping 58 matching lines @@
   i::Handle<i::Symbol> symbol(isolate->context()->wasm_memory_sym(), isolate);
   return HasBrand(value, symbol);
 }
 
 bool WasmJs::IsWasmTableObject(Isolate* isolate, Handle<Object> value) {
   i::Handle<i::Symbol> symbol(isolate->context()->wasm_table_sym(), isolate);
   return HasBrand(value, symbol);
 }
 }  // namespace internal
 }  // namespace v8