Remove all blimp engine code

blimp/engine/app/blimp_network_delegate.cc

-// Copyright 2015 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 "blimp/engine/app/blimp_network_delegate.h"
-
-#include "net/base/net_errors.h"
-#include "net/base/static_cookie_policy.h"
-#include "net/url_request/url_request.h"
-
-namespace blimp {
-namespace engine {
-
-namespace {
-bool g_accept_all_cookies = true;
-
-net::StaticCookiePolicy::Type GetPolicyType() {
-  return g_accept_all_cookies
-             ? net::StaticCookiePolicy::ALLOW_ALL_COOKIES
-             : net::StaticCookiePolicy::BLOCK_ALL_THIRD_PARTY_COOKIES;
-}
-
-}  // namespace
-
-BlimpNetworkDelegate::BlimpNetworkDelegate() {}
-
-BlimpNetworkDelegate::~BlimpNetworkDelegate() {}
-
-void BlimpNetworkDelegate::SetAcceptAllCookies(bool accept) {
-  g_accept_all_cookies = accept;
-}
-
-bool BlimpNetworkDelegate::OnCanGetCookies(const net::URLRequest& request,
-                                           const net::CookieList& cookie_list) {
-  net::StaticCookiePolicy policy(GetPolicyType());
-  int rv =
-      policy.CanGetCookies(request.url(), request.first_party_for_cookies());
-  return rv == net::OK;
-}
-
-bool BlimpNetworkDelegate::OnCanSetCookie(const net::URLRequest& request,
-                                          const std::string& cookie_line,
-                                          net::CookieOptions* options) {
-  net::StaticCookiePolicy policy(GetPolicyType());
-  int rv =
-      policy.CanSetCookie(request.url(), request.first_party_for_cookies());
-  return rv == net::OK;
-}
-
-}  // namespace engine
-}  // namespace blimp