Implemented argument wrapping for CallJS.

chrome/browser/ui/webui/chromeos/login/base_screen_handler_utils.h

 // Copyright (c) 2013 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.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_
 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_
 
 #include <cstddef>
 #include <string>
 
@@ skipping 45 matching lines @@
   return args->GetString(index, out_value);
 }
 
 template<>
 inline bool GetArg<string16>(const base::ListValue* args,
                              size_t index,
                              string16* out_value) {
   return args->GetString(index, out_value);
 }
 
+inline base::FundamentalValue MakeValue(bool v) {
+  return base::FundamentalValue(v);
+}
+
+inline base::FundamentalValue MakeValue(int v) {
+  return base::FundamentalValue(v);
+}
+
+inline base::FundamentalValue MakeValue(double v) {
+  return base::FundamentalValue(v);
+}
+
+inline base::StringValue MakeValue(const std::string& v) {
+  return base::StringValue(v);
+}
+
+inline base::StringValue MakeValue(const string16& v) {
+  return base::StringValue(v);
+}
+
+template<typename T>
+inline const T& MakeValue(const T& v) {
+  return v;
+}
+
 inline void CallbackWrapper0(base::Callback<void()> callback,
                              const base::ListValue* args) {
   DCHECK(args);
   DCHECK(args->empty());
   callback.Run();
 }
 
 template<typename A1>
 void CallbackWrapper1(base::Callback<void(A1)> callback,
                       const base::ListValue* args) {
@@ skipping 53 matching lines @@
       !GetArg(args, 3, &arg4)) {
     NOTREACHED();
     return;
   }
   callback.Run(arg1, arg2, arg3, arg4);
 }
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_BASE_SCREEN_HANDLER_UTILS_H_