[wasm] Differentiate unnamed and empty names

src/runtime/runtime-function.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/runtime/runtime-utils.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/frames-inl.h"
@@ skipping 293 matching lines @@
 RUNTIME_FUNCTION(Runtime_FunctionToString) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_HANDLE_CHECKED(JSReceiver, function, 0);
   return function->IsJSBoundFunction()
              ? *JSBoundFunction::ToString(
                    Handle<JSBoundFunction>::cast(function))
              : *JSFunction::ToString(Handle<JSFunction>::cast(function));
 }
 
-RUNTIME_FUNCTION(Runtime_WasmGetFunctionName) {
-  HandleScope scope(isolate);
-  DCHECK_EQ(2, args.length());
-
-  CONVERT_ARG_HANDLE_CHECKED(JSObject, wasm, 0);
-  CONVERT_SMI_ARG_CHECKED(func_index, 1);
-
-  return *wasm::GetWasmFunctionName(wasm, func_index);
-}
-
 }  // namespace internal
 }  // namespace v8