Generate parameter stubs using ASTs.

sdk/lib/_internal/compiler/implementation/native_handler.dart

Index: sdk/lib/_internal/compiler/implementation/native_handler.dart
diff --git a/sdk/lib/_internal/compiler/implementation/native_handler.dart b/sdk/lib/_internal/compiler/implementation/native_handler.dart
index 74bf5ffb37c2c793954ebe95346d1230151f0e19..038dc439bdeaddab2efba13b169ac7c874aeb819 100644
--- a/sdk/lib/_internal/compiler/implementation/native_handler.dart
+++ b/sdk/lib/_internal/compiler/implementation/native_handler.dart
@@ -809,47 +809,3 @@ void handleSsaNative(SsaBuilder builder, Expression nativeBody) {
     builder.push(new HForeign.statement(jsCode.dartString, <HInstruction>[]));
   }
 }
-
-void generateMethodWithPrototypeCheckForElement(Compiler compiler,
-                                                StringBuffer buffer,
-                                                FunctionElement element,
-                                                String code,
-                                                String parameters) {
-  String methodName;
-  JavaScriptBackend backend = compiler.backend;
-  Namer namer = backend.namer;
-  if (element.kind == ElementKind.FUNCTION) {
-    methodName = namer.instanceMethodName(element);
-  } else if (element.kind == ElementKind.GETTER) {
-    methodName = namer.getterName(element.getLibrary(), element.name);
-  } else if (element.kind == ElementKind.SETTER) {
-    methodName = namer.setterName(element.getLibrary(), element.name);
-  } else {
-    compiler.internalError('unexpected kind: "${element.kind}"',
-                           element: element);
-  }
-
-  generateMethodWithPrototypeCheck(
-      compiler, buffer, methodName, code, parameters);
-}
-
-
-// If a method is overridden, we must check if the prototype of
-// 'this' has the method available. Otherwise, we may end up
-// calling the method from the super class. If the method is not
-// available, we make a direct call to Object.prototype.$methodName.
-// This method will patch the prototype of 'this' to the real method.
-void generateMethodWithPrototypeCheck(Compiler compiler,
-                                      StringBuffer buffer,
-                                      String methodName,
-                                      String code,
-                                      String parameters) {
-  buffer.add("  if (Object.getPrototypeOf(this).hasOwnProperty");
-  buffer.add("('$methodName')) {\n");
-  buffer.add("  $code");
-  buffer.add("  } else {\n");
-  buffer.add("    return Object.prototype.$methodName.call(this");
-  buffer.add(parameters == '' ? '' : ', $parameters');
-  buffer.add(");\n");
-  buffer.add("  }\n");
-}