Ensure that privates are private.

extensions/renderer/utils_native_handler.cc

 // Copyright 2014 The Chromium 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 "extensions/renderer/utils_native_handler.h"
 
 #include "base/macros.h"
-#include "base/strings/stringprintf.h"
 #include "extensions/renderer/script_context.h"
 #include "third_party/WebKit/public/web/WebSerializedScriptValue.h"
 
 namespace extensions {
 
 UtilsNativeHandler::UtilsNativeHandler(ScriptContext* context)
     : ObjectBackedNativeHandler(context) {
-  RouteFunction("createClassWrapper",
-                base::Bind(&UtilsNativeHandler::CreateClassWrapper,
-                           base::Unretained(this)));
   RouteFunction(
       "deepCopy",
       base::Bind(&UtilsNativeHandler::DeepCopy, base::Unretained(this)));
 }
 
 UtilsNativeHandler::~UtilsNativeHandler() {}
 
-void UtilsNativeHandler::CreateClassWrapper(
-    const v8::FunctionCallbackInfo<v8::Value>& args) {
-  CHECK_EQ(3, args.Length());
-  CHECK(args[0]->IsString());
-  std::string name = *v8::String::Utf8Value(args[0]);
-  CHECK(args[1]->IsObject());
-  v8::Local<v8::Object> cls = args[1].As<v8::Object>();
-  CHECK(args[2]->IsObject() || args[2]->IsUndefined());
-  v8::Local<v8::Value> superclass = args[2];
-
-  v8::HandleScope handle_scope(GetIsolate());
-  // TODO(fsamuel): Consider moving the source wrapping to ModuleSystem.
-  v8::Local<v8::String> source = v8::String::NewFromUtf8(
-      GetIsolate(),
-      base::StringPrintf(
-          "(function($Object, $Function, privates, cls, superclass) {"
-          "'use strict';\n"
-          "  function %s() {\n"
-          "    var privateObj = $Object.create(cls.prototype);\n"
-          "    $Function.apply(cls, privateObj, arguments);\n"
-          "    privateObj.wrapper = this;\n"
-          "    privates(this).impl = privateObj;\n"
-          "  };\n"
-          "  if (superclass) {\n"
-          "    %s.prototype = Object.create(superclass.prototype);\n"
-          "  }\n"
-          "  return %s;\n"
-          "})",
-          name.c_str(), name.c_str(), name.c_str()).c_str());
-  v8::Local<v8::Value> func_as_value = context()->module_system()->RunString(
-      source, v8::String::NewFromUtf8(GetIsolate(), name.c_str()));
-  if (func_as_value.IsEmpty() || func_as_value->IsUndefined()) {
-    args.GetReturnValue().SetUndefined();
-    return;
-  }
-
-  // TODO(fsamuel): Move privates from ModuleSystem to a shared location.
-  v8::Local<v8::Object> natives(context()->module_system()->NewInstance());
-  CHECK(!natives.IsEmpty());  // this can happen if v8 has issues
-
-  v8::Local<v8::Function> func = func_as_value.As<v8::Function>();
-  v8::Local<v8::Value> func_args[] = {
-      context()->safe_builtins()->GetObjekt(),
-      context()->safe_builtins()->GetFunction(),
-      natives->Get(v8::String::NewFromUtf8(GetIsolate(), "privates",
-                                           v8::String::kInternalizedString)),
-      cls,
-      superclass};
-  v8::Local<v8::Value> result;
-  {
-    v8::TryCatch try_catch(GetIsolate());
-    try_catch.SetCaptureMessage(true);
-    result = context()->CallFunction(func, arraysize(func_args), func_args);
-    if (try_catch.HasCaught()) {
-      args.GetReturnValue().SetUndefined();
-      return;
-    }
-  }
-  args.GetReturnValue().Set(result);
-}
-
 void UtilsNativeHandler::DeepCopy(
     const v8::FunctionCallbackInfo<v8::Value>& args) {
   CHECK_EQ(1, args.Length());
   args.GetReturnValue().Set(
       blink::WebSerializedScriptValue::serialize(args[0]).deserialize());
 }
 
 }  // namespace extensions