Race TCP connection to proxies with QUIC connections

net/http/http_stream_factory_impl_job_controller.h

Index: net/http/http_stream_factory_impl_job_controller.h
diff --git a/net/http/http_stream_factory_impl_job_controller.h b/net/http/http_stream_factory_impl_job_controller.h
index c19b679166f9ae3302fe22a52e85ee0168d1409a..3efd2ac5c7d9f7713ed4acfd6a44bb5b25018421 100644
--- a/net/http/http_stream_factory_impl_job_controller.h
+++ b/net/http/http_stream_factory_impl_job_controller.h
@@ -5,6 +5,7 @@
 #ifndef NET_HTTP_HTTP_STREAM_FACTORY_IMPL_JOB_CONTROLLER_H_
 #define NET_HTTP_HTTP_STREAM_FACTORY_IMPL_JOB_CONTROLLER_H_
 
+#include "net/base/host_port_pair.h"
 #include "net/http/http_stream_factory_impl_job.h"
 #include "net/http/http_stream_factory_impl_request.h"
 
@@ -114,6 +115,14 @@ class HttpStreamFactoryImpl::JobController
                         const ProxyInfo& used_proxy_info,
                         HttpAuthController* auth_controller) override;
 
+  void OnResolveProxyComplete(
+      Job* job,
+      const HttpRequestInfo& request_info,
+      RequestPriority priority,
+      const SSLConfig& server_ssl_config,
+      const SSLConfig& proxy_ssl_config,
+      HttpStreamRequest::StreamType stream_type) override;
+
   // Invoked to notify the Request and Factory of the readiness of new
   // SPDY session.
   void OnNewSpdySessionReady(Job* job,
@@ -215,6 +224,16 @@ class HttpStreamFactoryImpl::JobController
   // Remove session from the SpdySessionRequestMap.
   void RemoveRequestFromSpdySessionRequestMap();
 
+  // Returns true if the |request_| can be fetched via an alternative
+  // proxy server, and sets |alternative_proxy_server| to the available
+  // alternative proxy server. |alternative_proxy_server| should not be null,
+  // and is owned by the caller.
+  bool ShouldCreateAlternativeProxyServerJob(
+      Job* job,
+      const ProxyInfo& proxy_info_,
+      const GURL& url,
+      ProxyServer* alternative_proxy_server) const;
+
   HttpStreamFactoryImpl* factory_;
   HttpNetworkSession* session_;
   JobFactory* job_factory_;
@@ -249,6 +268,10 @@ class HttpStreamFactoryImpl::JobController
   // It will be nulled when the |request_| is finished.
   Job* bound_job_;
 
+  // True if an alternative proxy server job was started in the past to fetch
+  // |request_|.
+  bool started_alternative_proxy_server_job_;
+
   base::WeakPtrFactory<JobController> ptr_factory_;
 };