Add Finch experiment for selectively bypassing proxies.

chrome/browser/net/chrome_network_delegate.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_NET_CHROME_NETWORK_DELEGATE_H_
 #define CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 30 matching lines @@
 class DomainReliabilityMonitor;
 }  // namespace domain_reliability
 
 namespace extensions {
 class EventRouterForwarder;
 class InfoMap;
 }
 
 namespace net {
 class URLRequest;
+class ProxyInfo;
 }
 
 namespace policy {
 class URLBlacklistManager;
 }
 
 namespace prerender {
 class PrerenderTracker;
 }
 
@@ skipping 55 matching lines @@
 
   void set_prerender_tracker(prerender::PrerenderTracker* prerender_tracker) {
     prerender_tracker_ = prerender_tracker;
   }
 
   void set_data_reduction_proxy_params(
       data_reduction_proxy::DataReductionProxyParams* params) {
     data_reduction_proxy_params_ = params;
   }
 
+  // Provides an opportunity to interpose on proxy resolution. Called before
+  // ProxyService.ResolveProxy() returns. |proxy_info| contains information
+  // about the proxy being used, and may be modified by this callback.
+  typedef base::Callback<void(const GURL& url, int load_flags,
+                              net::ProxyInfo* result)> OnResolveProxyHandler;
+
+  void set_on_resolve_proxy_handler(OnResolveProxyHandler* handler) {
+    on_resolve_proxy_handler_ = handler;
+  }
+
   // Adds the Client Hints header to HTTP requests.
   void SetEnableClientHints();
 
   // Causes |OnCanThrottleRequest| to always return false, for all
   // instances of this object.
   static void NeverThrottleRequests();
 
   // Binds the pref members to |pref_service| and moves them to the IO thread.
   // |enable_referrers| cannot be NULL, the others can.
   // This method should be called on the UI thread.
@@ skipping 16 matching lines @@
   // responsible for deleting the returned value.
   base::Value* SessionNetworkStatsInfoToValue() const;
 
  private:
   friend class ChromeNetworkDelegateTest;
 
   // NetworkDelegate implementation.
   virtual int OnBeforeURLRequest(net::URLRequest* request,
                                  const net::CompletionCallback& callback,
                                  GURL* new_url) OVERRIDE;
+  virtual void OnResolveProxy(
+      const GURL& url, int load_flags, net::ProxyInfo* result) OVERRIDE;
   virtual int OnBeforeSendHeaders(net::URLRequest* request,
                                   const net::CompletionCallback& callback,
                                   net::HttpRequestHeaders* headers) OVERRIDE;
   virtual void OnSendHeaders(net::URLRequest* request,
                              const net::HttpRequestHeaders& headers) OVERRIDE;
   virtual int OnHeadersReceived(
       net::URLRequest* request,
       const net::CompletionCallback& callback,
       const net::HttpResponseHeaders* original_response_headers,
       scoped_refptr<net::HttpResponseHeaders>* override_response_headers,
@@ skipping 71 matching lines @@
   int64 original_content_length_;
 
   scoped_ptr<ClientHints> client_hints_;
 
   bool first_request_;
 
   prerender::PrerenderTracker* prerender_tracker_;
 
   data_reduction_proxy::DataReductionProxyParams* data_reduction_proxy_params_;
 
+  OnResolveProxyHandler* on_resolve_proxy_handler_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeNetworkDelegate);
 };
 
 #endif  // CHROME_BROWSER_NET_CHROME_NETWORK_DELEGATE_H_