Revert of [cast_channel] Move cast_channel related files from //extensions to //components

components/cast_channel/cast_test_util.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 "components/cast_channel/cast_test_util.h"
-
-#include <utility>
-
-#include "net/base/ip_address.h"
-
-namespace cast_channel {
-
-MockCastTransport::MockCastTransport() {}
-MockCastTransport::~MockCastTransport() {}
-
-CastTransport::Delegate* MockCastTransport::current_delegate() const {
-  CHECK(delegate_);
-  return delegate_.get();
-}
-
-void MockCastTransport::SetReadDelegate(
-    std::unique_ptr<CastTransport::Delegate> delegate) {
-  delegate_ = std::move(delegate);
-}
-
-MockCastTransportDelegate::MockCastTransportDelegate() {}
-MockCastTransportDelegate::~MockCastTransportDelegate() {}
-
-MockCastSocket::MockCastSocket() : mock_transport_(new MockCastTransport()) {}
-MockCastSocket::~MockCastSocket() {}
-
-net::IPEndPoint CreateIPEndPointForTest() {
-  return net::IPEndPoint(net::IPAddress(192, 168, 1, 1), 8009);
-}
-
-}  // namespace cast_channel