Revert of Add browser tests for FetchEvent.request.mode/credentials in the service worker

chrome/test/data/nacl/pnacl_url_loader/pnacl_url_loader.cc

-// Copyright 2016 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 <string>
-
-#include "ppapi/cpp/instance.h"
-#include "ppapi/cpp/module.h"
-#include "ppapi/cpp/url_loader.h"
-#include "ppapi/cpp/url_request_info.h"
-#include "ppapi/cpp/url_response_info.h"
-#include "ppapi/cpp/var.h"
-#include "ppapi/utility/completion_callback_factory.h"
-
-class PnaclUrlLoaderInstance : public pp::Instance {
- public:
-  explicit PnaclUrlLoaderInstance(PP_Instance instance)
-      : pp::Instance(instance), loader_(this), factory_(this) {}
-
-  void HandleMessage(const pp::Var& var_message) override {
-    if (var_message.is_string()) {
-      command_ = var_message.AsString();
-      pp::URLRequestInfo request(this);
-      request.SetMethod("GET");
-      if (command_.find("Other") != std::string::npos)
-        request.SetURL("https://www.example.com/echo");
-      else
-        request.SetURL("/echo");
-      if (command_.find("CORS") != std::string::npos)
-        request.SetAllowCrossOriginRequests(true);
-      if (command_.find("Credentials") != std::string::npos)
-        request.SetAllowCredentials(true);
-      loader_.Open(request,
-                   factory_.NewCallback(&PnaclUrlLoaderInstance::OnOpen));
-      return;
-    }
-  }
-
- private:
-  void OnOpen(int32_t result) { PostMessage(pp::Var("OnOpen" + command_)); }
-
-  pp::URLLoader loader_;
-  pp::CompletionCallbackFactory<PnaclUrlLoaderInstance> factory_;
-  std::string command_;
-};
-
-class PnaclUrlLoaderModule : public pp::Module {
- public:
-  virtual pp::Instance* CreateInstance(PP_Instance instance) {
-    return new PnaclUrlLoaderInstance(instance);
-  }
-};
-
-namespace pp {
-
-__attribute__((visibility("default"))) Module* CreateModule() {
-  return new PnaclUrlLoaderModule();
-}
-
-}  // namespace pp