Refactor module builder

test/mjsunit/wasm/start-function.js

Index: test/mjsunit/wasm/start-function.js
diff --git a/test/mjsunit/wasm/start-function.js b/test/mjsunit/wasm/start-function.js
index 3c5707a2d992859d429763c6f3735de3473a2a10..c4d299e871e55e1a3cf10d82fc257584d5a40362 100644
--- a/test/mjsunit/wasm/start-function.js
+++ b/test/mjsunit/wasm/start-function.js
@@ -65,8 +65,8 @@ assertFails(kSig_i_dd, [kExprGetLocal, 0]);
   var func = builder.addFunction("", kSig_v_v)
     .addBody([kExprNop]);
 
-  builder.addExplicitSection([kDeclStartFunction, 0]);
-  builder.addExplicitSection([kDeclStartFunction, 0]);
+  builder.addExplicitSection([kDeclStart, 0]);
+  builder.addExplicitSection([kDeclStart, 0]);
 
   assertThrows(builder.instantiate);
 })();
@@ -98,7 +98,7 @@ assertFails(kSig_i_dd, [kExprGetLocal, 0]);
   }};
 
   var builder = new WasmModuleBuilder();
-  var sig_index = builder.addSignature(kSig_v_v);
+  var sig_index = builder.addType(kSig_v_v);
 
   builder.addImport("foo", sig_index);
   var func = builder.addFunction("", sig_index)