Remove HTTP pipelining support.

net/http/http_stream_factory_impl_job.h

Index: net/http/http_stream_factory_impl_job.h
diff --git a/net/http/http_stream_factory_impl_job.h b/net/http/http_stream_factory_impl_job.h
index d4406477f7ea5c6435d7ee74eaf2422da7457433..c408a0677945dc92b8f34cf18cc811c437fb9202 100644
--- a/net/http/http_stream_factory_impl_job.h
+++ b/net/http/http_stream_factory_impl_job.h
@@ -13,7 +13,6 @@
 #include "net/base/request_priority.h"
 #include "net/http/http_auth.h"
 #include "net/http/http_auth_controller.h"
-#include "net/http/http_pipelined_host.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_stream_factory_impl.h"
 #include "net/proxy/proxy_service.h"
@@ -220,8 +219,6 @@ class HttpStreamFactoryImpl::Job {
   // Should we force QUIC for this stream request.
   bool ShouldForceQuic() const;
 
-  bool IsRequestEligibleForPipelining();
-
   // Record histograms of latency until Connect() completes.
   static void LogHttpConnectedMetrics(const ClientSocketHandle& handle);
 
@@ -325,12 +322,6 @@ class HttpStreamFactoryImpl::Job {
   // Only used if |new_spdy_session_| is non-NULL.
   bool spdy_session_direct_;
 
-  // Key used to identify the HttpPipelinedHost for |request_|.
-  scoped_ptr<HttpPipelinedHost::Key> http_pipelining_key_;
-
-  // True if an existing pipeline can handle this job's request.
-  bool existing_available_pipeline_;
-
   base::WeakPtrFactory<Job> ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(Job);