[wasm] Implement WebAssembly.Module.customSections.

src/wasm/wasm-module.h

Index: src/wasm/wasm-module.h
diff --git a/src/wasm/wasm-module.h b/src/wasm/wasm-module.h
index b91933e7af6142b124f27a8db3de833681890219..82eeb00e41ff8912fcb172a956a6767961216fdb 100644
--- a/src/wasm/wasm-module.h
+++ b/src/wasm/wasm-module.h
@@ -406,9 +406,8 @@ V8_EXPORT_PRIVATE Handle<JSArray> GetImports(Isolate* isolate,
                                              Handle<WasmModuleObject> module);
 V8_EXPORT_PRIVATE Handle<JSArray> GetExports(Isolate* isolate,
                                              Handle<WasmModuleObject> module);
-
-V8_EXPORT_PRIVATE Handle<JSArray> GetExports(Isolate* isolate,
-                                             Handle<WasmModuleObject> module);
+V8_EXPORT_PRIVATE Handle<JSArray> GetCustomSections(
+    Isolate* isolate, Handle<WasmModuleObject> module, Handle<String> name);
 
 V8_EXPORT_PRIVATE bool ValidateModuleBytes(Isolate* isolate, const byte* start,
                                            const byte* end,