Add Finch experiment for selectively bypassing proxies.

net/socket_stream/socket_stream.cc

 // 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.
 //
 // TODO(ukai): code is similar with http_network_transaction.cc.  We should
 //   think about ways to share code, if possible.
 
 #include "net/socket_stream/socket_stream.h"
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "net/base/auth.h"
 #include "net/base/io_buffer.h"
+#include "net/base/load_flags.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_util.h"
 #include "net/dns/host_resolver.h"
 #include "net/http/http_auth_controller.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_stream_factory.h"
 #include "net/http/http_transaction_factory.h"
@@ skipping 589 matching lines @@
 
   // TODO(toyoshim): Check server advertisement of SPDY through the HTTP
   // Alternate-Protocol header, then switch to SPDY if SPDY is available.
   // Usually we already have a session to the SPDY server because JavaScript
   // running WebSocket itself would be served by SPDY. But, in some situation
   // (E.g. Used by Chrome Extensions or used for cross origin connection), this
   // connection might be the first one. At that time, we should check
   // Alternate-Protocol header here for ws:// or TLS NPN extension for wss:// .
 
   return context_->proxy_service()->ResolveProxy(
-      proxy_url_, &proxy_info_, io_callback_, &pac_request_, net_log_);
+      proxy_url_, net::LOAD_NORMAL, &proxy_info_, io_callback_, &pac_request_,
+      NULL, net_log_);
 }
 
 int SocketStream::DoResolveProxyComplete(int result) {
   pac_request_ = NULL;
   if (result != OK) {
     DVLOG(1) << "Failed to resolve proxy: " << result;
     if (delegate_)
       delegate_->OnError(this, result);
     proxy_info_.UseDirect();
   }
@@ skipping 702 matching lines @@
 
   delegate_->OnSSLCertificateError(this, ssl_info, fatal);
   return ERR_IO_PENDING;
 }
 
 CookieStore* SocketStream::cookie_store() const {
   return cookie_store_;
 }
 
 }  // namespace net