Basic HTTP pipelining support

net/http/http_stream_factory_impl_request.h

Index: net/http/http_stream_factory_impl_request.h
diff --git a/net/http/http_stream_factory_impl_request.h b/net/http/http_stream_factory_impl_request.h
index 4a7ace49884fb44d362bf286fd98eb9447d5922e..da81b73cf43541a3f9640c7b07e2042df24a19e6 100644
--- a/net/http/http_stream_factory_impl_request.h
+++ b/net/http/http_stream_factory_impl_request.h
@@ -30,6 +30,11 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
   // before knowing if SPDY is available.
   void SetSpdySessionKey(const HostPortProxyPair& spdy_session_key);
 
+  // Called when the Job determines the appropriate |http_pipelining_key| for
+  // the Request. Registers this Request with the factory, so that if an
+  // existing pipeline becomes available, this Request can be late bound to it.
+  void SetHttpPipeliningKey(const HostPortPair& http_pipelining_key);
+
   // Attaches |job| to this request. Does not mean that Request will use |job|,
   // but Request will own |job|.
   void AttachJob(HttpStreamFactoryImpl::Job* job);
@@ -41,10 +46,14 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
                 bool using_spdy,
                 const NetLog::Source& source);
 
-  // If this Request has a spdy_session_key, remove this session from the
+  // If this Request has a |spdy_session_key_|, remove this session from the
   // SpdySessionRequestMap.
   void RemoveRequestFromSpdySessionRequestMap();
 
+  // If this Request has a |http_pipelining_key_|, remove this session from the
+  // HttpPipeliningRequestMap.
+  void RemoveRequestFromHttpPipeliningRequestMap();
+
   // Called by an attached Job if it sets up a SpdySession.
   void OnSpdySessionReady(Job* job,
                           scoped_refptr<SpdySession> spdy_session,
@@ -102,6 +111,7 @@ class HttpStreamFactoryImpl::Request : public HttpStreamRequest {
   scoped_ptr<Job> bound_job_;
   std::set<HttpStreamFactoryImpl::Job*> jobs_;
   scoped_ptr<const HostPortProxyPair> spdy_session_key_;
+  scoped_ptr<const HostPortPair> http_pipelining_key_;
 
   bool completed_;
   bool was_npn_negotiated_;