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

net/test/embedded_test_server/simple_connection_listener.h

-// 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.
-
-#ifndef NET_TEST_EMBEDDED_TEST_SERVER_SIMPLE_CONNECTION_LISTENER_H_
-#define NET_TEST_EMBEDDED_TEST_SERVER_SIMPLE_CONNECTION_LISTENER_H_
-
-#include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/run_loop.h"
-#include "net/test/embedded_test_server/embedded_test_server_connection_listener.h"
-
-namespace base {
-class SequencedTaskRunner;
-}
-
-namespace net {
-
-class StreamSocket;
-
-namespace test_server {
-
-// Waits for a specified number of connection attempts to be seen.
-class SimpleConnectionListener : public EmbeddedTestServerConnectionListener {
- public:
-  enum AllowAdditionalConnections {
-    // Add an expect failure if more than the specified number of connections
-    // are seen.
-    FAIL_ON_ADDITIONAL_CONNECTIONS,
-    // Silently ignores extra connection attempts.
-    ALLOW_ADDITIONAL_CONNECTIONS
-  };
-
-  // A connection listener that waits for the specified number of total
-  // connections when WaitForConnections() is called.  Must be created on a
-  // thread with a SingleThreadedTaskRunner.
-  SimpleConnectionListener(
-      int expected_connections,
-      AllowAdditionalConnections allow_additional_connections);
-
-  // Must be torn down only after the EmbeddedTestServer it's attached to is
-  // shut down.
-  ~SimpleConnectionListener() override;
-
-  void AcceptedSocket(const StreamSocket& socket) override;
-  void ReadFromSocket(const StreamSocket& socket, int rv) override;
-
-  // Wait until the expected number of connections have been seen.
-  void WaitForConnections();
-
- private:
-  int seen_connections_ = 0;
-
-  const int expected_connections_;
-  const AllowAdditionalConnections allow_additional_connections_;
-
-  const scoped_refptr<base::SequencedTaskRunner> run_loop_task_runner_;
-
-  base::RunLoop run_loop_;
-
-  DISALLOW_COPY_AND_ASSIGN(SimpleConnectionListener);
-};
-
-}  // namespace test_server
-}  // namespace net
-
-#endif  // NET_TEST_EMBEDDED_TEST_SERVER_SIMPLE_CONNECTION_LISTENER_H_