Remove mojo/apps/js, it is unused

mojo/apps/js/content_handler_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/i18n/icu_util.h"
-#include "mojo/application/application_runner_chromium.h"
-#include "mojo/apps/js/application_delegate_impl.h"
-#include "mojo/apps/js/content_handler_impl.h"
-#include "mojo/public/c/system/main.h"
-#include "mojo/public/cpp/application/application_impl.h"
-#include "mojo/public/cpp/application/interface_factory_impl.h"
-#include "mojo/services/public/interfaces/content_handler/content_handler.mojom.h"
-
-namespace mojo {
-namespace apps {
-
-class ContentHandlerApplicationDelegateImpl : public ApplicationDelegateImpl {
- public:
-  ContentHandlerApplicationDelegateImpl() : content_handler_factory_(this) {
-  }
-
- private:
-  void Initialize(ApplicationImpl* app) override {
-    base::i18n::InitializeICU();
-    ApplicationDelegateImpl::Initialize(app);
-  }
-
-  bool ConfigureIncomingConnection(ApplicationConnection* connection) override {
-    connection->AddService(&content_handler_factory_);
-    return true;
-  }
-
-  InterfaceFactoryImplWithContext<ContentHandlerImpl, ApplicationDelegateImpl>
-      content_handler_factory_;
-};
-
-}  // namespace apps
-}  // namespace mojo
-
-MojoResult MojoMain(MojoHandle shell_handle) {
-  mojo::ApplicationRunnerChromium runner(
-      new mojo::apps::ContentHandlerApplicationDelegateImpl());
-  return runner.Run(shell_handle);
-}