Add Finch experiment for selectively bypassing proxies.

chrome/browser/io_thread.h

 // Copyright (c) 2012 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_IO_THREAD_H_
 #define CHROME_BROWSER_IO_THREAD_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_member.h"
 #include "base/time/time.h"
+#include "chrome/browser/net/chrome_network_delegate.h"
 #include "chrome/browser/net/ssl_config_service_manager.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_auth_request_handler.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_params.h"
 #include "components/data_reduction_proxy/browser/data_reduction_proxy_usage_stats.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/browser_thread_delegate.h"
 #include "net/base/network_change_notifier.h"
 #include "net/http/http_network_session.h"
 #include "net/socket/next_proto.h"
 
@@ skipping 160 matching lines @@
     // NetErrorTabHelper uses |dns_probe_service| to send DNS probes when a
     // main frame load fails with a DNS error in order to provide more useful
     // information to the renderer so it can show a more specific error page.
     scoped_ptr<chrome_browser_net::DnsProbeService> dns_probe_service;
     scoped_ptr<data_reduction_proxy::DataReductionProxyParams>
         data_reduction_proxy_params;
     scoped_ptr<data_reduction_proxy::DataReductionProxyUsageStats>
         data_reduction_proxy_usage_stats;
     scoped_ptr<data_reduction_proxy::DataReductionProxyAuthRequestHandler>
         data_reduction_proxy_auth_request_handler;
+    scoped_ptr<ChromeNetworkDelegate::OnResolveProxyHandler>
+        on_resolve_proxy_handler;

[mmenke, 2014/07/07 20:21:59]

No need for a scoped_ptr here, callbacks have their own method to check if
they're NULL.

[rcs, 2014/07/07 22:08:49]

Done.

   };
 
   // |net_log| must either outlive the IOThread or be NULL.
   IOThread(PrefService* local_state,
            policy::PolicyService* policy_service,
            ChromeNetLog* net_log,
            extensions::EventRouterForwarder* extension_event_router_forwarder);
 
   virtual ~IOThread();
 
@@ skipping 206 matching lines @@
   bool is_spdy_disabled_by_policy_;
 
   base::WeakPtrFactory<IOThread> weak_factory_;
 
   const base::TimeTicks creation_time_;
 
   DISALLOW_COPY_AND_ASSIGN(IOThread);
 };
 
 #endif  // CHROME_BROWSER_IO_THREAD_H_