mojo: Update content handler API

mojo/apps/js/standalone_main.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 "base/files/file_util.h"
-#include "base/i18n/icu_util.h"
-#include "mojo/application/application_runner_chromium.h"
-#include "mojo/apps/js/application_delegate_impl.h"
-#include "mojo/apps/js/js_app.h"
-#include "mojo/public/c/system/main.h"
-#include "mojo/public/cpp/application/application_delegate.h"
-#include "mojo/public/cpp/application/application_impl.h"
-
-namespace mojo {
-namespace apps {
-
-class StandaloneJSApp : public JSApp {
- public:
-  StandaloneJSApp(ApplicationDelegateImpl* app_delegate_impl,
-                  const base::FilePath& path)
-      : JSApp(app_delegate_impl),
-        path_(path) {
-  }
-
-  bool Load(std::string* source, std::string* file_name) override {
-    *file_name = path_.AsUTF8Unsafe();
-    return ReadFileToString(path_, source);
-  }
-
-  virtual MessagePipeHandle RequestorMessagePipeHandle() override {
-    return MessagePipeHandle();
-  }
-
- private:
-  base::FilePath path_;
-};
-
-class StandaloneApplicationDelegateImpl : public ApplicationDelegateImpl {
- private:
-  void Initialize(ApplicationImpl* app) override {
-    base::i18n::InitializeICU();
-    ApplicationDelegateImpl::Initialize(app);
-
-    for (size_t i = 1; i < app->args().size(); i++) {
-      base::FilePath path(base::FilePath::FromUTF8Unsafe(app->args()[i]));
-      scoped_ptr<JSApp> js_app(new StandaloneJSApp(this, path));
-      StartJSApp(js_app.Pass());
-    }
-  }
-};
-
-}  // namespace apps
-}  // namespace mojo
-
-MojoResult MojoMain(MojoHandle shell_handle) {
-  mojo::ApplicationRunnerChromium runner(
-      new mojo::apps::StandaloneApplicationDelegateImpl());
-  return runner.Run(shell_handle);
-}