Slow start pipelining.

net/http/http_stream_factory_impl_job.cc

Index: net/http/http_stream_factory_impl_job.cc
diff --git a/net/http/http_stream_factory_impl_job.cc b/net/http/http_stream_factory_impl_job.cc
index 46bc3f47c1bb8285f63d1f592628e16e7e89ca82..e105ab5bfd5e6df36e6f5a9084f2da6cd49db210 100644
--- a/net/http/http_stream_factory_impl_job.cc
+++ b/net/http/http_stream_factory_impl_job.cc
@@ -1137,7 +1137,7 @@ bool HttpStreamFactoryImpl::Job::IsOrphaned() const {
   return !IsPreconnecting() && !request_;
 }
 
-bool HttpStreamFactoryImpl::Job::IsRequestEligibleForPipelining() const {
+bool HttpStreamFactoryImpl::Job::IsRequestEligibleForPipelining() {
   if (!HttpStreamFactory::http_pipelining_enabled()) {
     return false;
   }
@@ -1147,7 +1147,11 @@ bool HttpStreamFactoryImpl::Job::IsRequestEligibleForPipelining() const {
   if (using_ssl_) {
     return false;
   }
-  return request_info_.method == "GET" || request_info_.method == "HEAD";
+  if (request_info_.method != "GET" && request_info_.method != "HEAD") {
+    return false;
+  }
+  return stream_factory_->http_pipelined_host_pool_.IsHostEligibleForPipelining(
+      origin_);
 }
 
 }  // namespace net