Revert of Allow use of Mojo/V8 ProxyResolvers with URLRequestContextBuilder.

net/test/embedded_test_server/simple_connection_listener.cc

-// Copyright 2017 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 "net/test/embedded_test_server/simple_connection_listener.h"
-
-#include "base/location.h"
-#include "base/sequenced_task_runner.h"
-#include "base/threading/thread_task_runner_handle.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace net {
-namespace test_server {
-
-SimpleConnectionListener::SimpleConnectionListener(
-    int expected_connections,
-    AllowAdditionalConnections allow_additional_connections)
-    : expected_connections_(expected_connections),
-      allow_additional_connections_(allow_additional_connections),
-      run_loop_task_runner_(base::ThreadTaskRunnerHandle::Get()) {}
-
-SimpleConnectionListener::~SimpleConnectionListener() {}
-
-void SimpleConnectionListener::AcceptedSocket(const StreamSocket& socket) {
-  ++seen_connections_;
-  if (allow_additional_connections_ != ALLOW_ADDITIONAL_CONNECTIONS)
-    EXPECT_LE(seen_connections_, expected_connections_);
-  if (seen_connections_ == expected_connections_)
-    run_loop_task_runner_->PostTask(FROM_HERE, run_loop_.QuitClosure());
-}
-
-void SimpleConnectionListener::ReadFromSocket(const StreamSocket& socket,
-                                              int rv) {}
-
-void SimpleConnectionListener::WaitForConnections() {
-  EXPECT_TRUE(run_loop_task_runner_->RunsTasksOnCurrentThread());
-  run_loop_.Run();
-}
-
-}  // namespace test_server
-}  // namespace net