[wasm] Decouple function name and exported name in WasmFunctionBuilder

test/fuzzer/wasm-code.cc

 // 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.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "include/v8.h"
 #include "src/isolate.h"
 #include "src/objects.h"
@@ skipping 27 matching lines @@
   v8::internal::AccountingAllocator allocator;
   v8::internal::Zone zone(&allocator);
 
   TestSignatures sigs;
 
   WasmModuleBuilder builder(&zone);
 
   v8::internal::wasm::WasmFunctionBuilder* f =
       builder.AddFunction(sigs.i_iii());
   f->EmitCode(data, static_cast<uint32_t>(size));
-  f->SetExported();
-  f->SetName("main", 4);
+  f->ExportAs(v8::internal::CStrVector("main"));
 
   ZoneBuffer buffer(&zone);
   builder.WriteTo(buffer);
 
   v8::internal::wasm::testing::SetupIsolateForWasmModule(i_isolate);
 
   v8::internal::HandleScope scope(i_isolate);
 
   ErrorThrower interpreter_thrower(i_isolate, "Interpreter");
   std::unique_ptr<const WasmModule> module(testing::DecodeWasmModuleForTesting(
@@ skipping 35 matching lines @@
     i_isolate->clear_pending_exception();
   } else {
     if (result_interpreted != result_compiled) {
       V8_Fatal(__FILE__, __LINE__, "WasmCodeFuzzerHash=%x",
                v8::internal::StringHasher::HashSequentialString(
                    data, static_cast<int>(size), WASM_CODE_FUZZER_HASH_SEED));
     }
   }
   return 0;
 }