Use a MojoProxyResolverFactory on Android.

chrome/browser/net/utility_process_mojo_proxy_resolver_factory.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 CHROME_BROWSER_NET_UTILITY_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_
-#define CHROME_BROWSER_NET_UTILITY_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_
-
-#include <stddef.h>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/threading/thread_checker.h"
-#include "base/timer/timer.h"
-#include "net/proxy/mojo_proxy_resolver_factory.h"
-
-namespace content {
-class UtilityProcessHost;
-}
-namespace base {
-template <typename Type>
-struct DefaultSingletonTraits;
-}  // namespace base
-
-// A factory used to create connections to Mojo proxy resolver services run in a
-// utility process. All Mojo proxy resolver services will be run in the same
-// utility process. Utility process crashes are detected and the utility
-// process is automatically restarted.
-class UtilityProcessMojoProxyResolverFactory
-    : public net::MojoProxyResolverFactory {
- public:
-  static UtilityProcessMojoProxyResolverFactory* GetInstance();
-
-  // Overridden from net::MojoProxyResolverFactory:
-  std::unique_ptr<base::ScopedClosureRunner> CreateResolver(
-      const std::string& pac_script,
-      mojo::InterfaceRequest<net::interfaces::ProxyResolver> req,
-      net::interfaces::ProxyResolverFactoryRequestClientPtr client) override;
-
- private:
-  friend struct base::DefaultSingletonTraits<
-      UtilityProcessMojoProxyResolverFactory>;
-  UtilityProcessMojoProxyResolverFactory();
-  ~UtilityProcessMojoProxyResolverFactory() override;
-
-  // Error handler callback for |resolver_factory_|.
-  void OnConnectionError();
-
-  // Invoked each time a proxy resolver is destroyed.
-  void OnResolverDestroyed();
-
-  // Invoked once an idle timeout has elapsed after all proxy resolvers are
-  // destroyed.
-  void OnIdleTimeout();
-
-  // Creates a new utility process and connects to its Mojo proxy resolver
-  // factory.
-  void CreateProcessAndConnect();
-
-  net::interfaces::ProxyResolverFactoryPtr resolver_factory_;
-
-  base::WeakPtr<content::UtilityProcessHost> weak_utility_process_host_;
-  size_t num_proxy_resolvers_ = 0;
-
-  base::OneShotTimer idle_timer_;
-
-  base::ThreadChecker thread_checker_;
-
-  DISALLOW_COPY_AND_ASSIGN(UtilityProcessMojoProxyResolverFactory);
-};
-
-#endif  // CHROME_BROWSER_NET_UTILITY_PROCESS_MOJO_PROXY_RESOLVER_FACTORY_H_