[wasm] Fix user properties for exported wasm functions and add extensive tests.

src/factory.cc

 // Copyright 2014 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/factory.h"
 
 #include "src/accessors.h"
 #include "src/allocation-site-scopes.h"
 #include "src/ast/ast-source-ranges.h"
 #include "src/ast/ast.h"
@@ skipping 1486 matching lines @@
         // bootstrapping.
         (has_code && (code->builtin_index() == Builtins::kEmptyFunction ||
                       code->builtin_index() == Builtins::kProxyConstructor)));
   } else {
     DCHECK(
         (*map == *isolate()->sloppy_function_map()) ||
         (*map == *isolate()->sloppy_function_without_prototype_map()) ||
         (*map == *isolate()->sloppy_function_with_readonly_prototype_map()) ||
         (*map == *isolate()->strict_function_map()) ||
         (*map == *isolate()->strict_function_without_prototype_map()) ||
-        (*map == *isolate()->wasm_function_map()) ||
         (*map == *isolate()->native_function_map()));
   }
 #endif
   return NewFunction(map, info, context);
 }
 
 
 Handle<JSFunction> Factory::NewFunction(Handle<String> name) {
   Handle<JSFunction> result =
       NewFunction(isolate()->sloppy_function_map(), name, MaybeHandle<Code>());
@@ skipping 1537 matching lines @@
     Handle<AccessorInfo> prototype =
         Accessors::FunctionPrototypeInfo(isolate(), rw_attribs);
     Descriptor d = Descriptor::AccessorConstant(
         Handle<Name>(Name::cast(prototype->name())), prototype, rw_attribs);
     map->AppendDescriptor(&d);
   }
 }
 
 }  // namespace internal
 }  // namespace v8