Remove all blimp engine code

blimp/engine/app/blimp_url_request_context_getter.h

-// 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.
-
-#ifndef BLIMP_ENGINE_APP_BLIMP_URL_REQUEST_CONTEXT_GETTER_H_
-#define BLIMP_ENGINE_APP_BLIMP_URL_REQUEST_CONTEXT_GETTER_H_
-
-#include <memory>
-
-#include "base/files/file_path.h"
-#include "base/macros.h"
-#include "content/public/browser/browser_context.h"
-#include "content/public/browser/content_browser_client.h"
-#include "net/url_request/url_request_context_getter.h"
-
-namespace base {
-class SingleThreadTaskRunner;
-}
-
-namespace net {
-class HostResolver;
-class NetLog;
-class ProxyConfigService;
-}
-
-namespace blimp {
-namespace engine {
-
-// The URLRequestContextGetter for Blimp "user" requests.
-// System request context is handled in a separate class.
-class BlimpURLRequestContextGetter : public net::URLRequestContextGetter {
- public:
-  // The content of |protocol_handlers| is is swapped into the new instance.
-  BlimpURLRequestContextGetter(
-      bool ignore_certificate_errors,
-      const base::FilePath& base_path,
-      const scoped_refptr<base::SingleThreadTaskRunner>& io_loop_task_runner,
-      const scoped_refptr<base::SingleThreadTaskRunner>& file_loop_task_runner,
-      content::ProtocolHandlerMap* protocol_handlers,
-      content::URLRequestInterceptorScopedVector request_interceptors,
-      net::NetLog* net_log);
-
-  // net::URLRequestContextGetter implementation.
-  net::URLRequestContext* GetURLRequestContext() override;
-  scoped_refptr<base::SingleThreadTaskRunner> GetNetworkTaskRunner()
-      const override;
-
-  net::HostResolver* host_resolver();
-
- private:
-  ~BlimpURLRequestContextGetter() override;
-
-  bool ignore_certificate_errors_;
-  base::FilePath base_path_;
-  scoped_refptr<base::SingleThreadTaskRunner> io_loop_task_runner_;
-  scoped_refptr<base::SingleThreadTaskRunner> file_loop_task_runner_;
-  net::NetLog* net_log_;
-
-  std::unique_ptr<net::ProxyConfigService> proxy_config_service_;
-  std::unique_ptr<net::URLRequestContext> url_request_context_;
-  content::ProtocolHandlerMap protocol_handlers_;
-  content::URLRequestInterceptorScopedVector request_interceptors_;
-
-  DISALLOW_COPY_AND_ASSIGN(BlimpURLRequestContextGetter);
-};
-
-}  // namespace engine
-}  // namespace blimp
-
-#endif  // BLIMP_ENGINE_APP_BLIMP_URL_REQUEST_CONTEXT_GETTER_H_