[wasm] Decouple function name and exported name in WasmFunctionBuilder

src/wasm/wasm-module-builder.h

Index: src/wasm/wasm-module-builder.h
diff --git a/src/wasm/wasm-module-builder.h b/src/wasm/wasm-module-builder.h
index 057d6102f1fa026c1364b44e65717831ae667cb5..ed08923d35c70434c743d6e91d99cc770b467998 100644
--- a/src/wasm/wasm-module-builder.h
+++ b/src/wasm/wasm-module-builder.h
@@ -132,8 +132,9 @@ class V8_EXPORT_PRIVATE WasmFunctionBuilder : public ZoneObject {
   void EmitWithU8U8(WasmOpcode opcode, const byte imm1, const byte imm2);
   void EmitWithVarInt(WasmOpcode opcode, uint32_t immediate);
   void EmitDirectCallIndex(uint32_t index);
-  void SetExported();
-  void SetName(const char* name, int name_length);
+  void Export();
+  void ExportAs(Vector<const char> name);
+  void SetName(Vector<const char> name);
 
   void WriteSignature(ZoneBuffer& buffer) const;
   void WriteExport(ZoneBuffer& buffer) const;
@@ -160,6 +161,7 @@ class V8_EXPORT_PRIVATE WasmFunctionBuilder : public ZoneObject {
   uint32_t func_index_;
   ZoneVector<uint8_t> body_;
   ZoneVector<char> name_;
+  ZoneVector<char> exported_name_;
   ZoneVector<uint32_t> i32_temps_;
   ZoneVector<uint32_t> i64_temps_;
   ZoneVector<uint32_t> f32_temps_;