Remove HTTP pipelining support.

net/net.gypi

Index: net/net.gypi
diff --git a/net/net.gypi b/net/net.gypi
index d606d12391016a1b394b4f454472dc60f0cef807..fed8a7903c19c7b7ce242143128c208651e7a739 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -614,20 +614,6 @@
       'http/http_network_session_peer.h',
       'http/http_network_transaction.cc',
       'http/http_network_transaction.h',
-      'http/http_pipelined_connection.h',
-      'http/http_pipelined_connection_impl.cc',
-      'http/http_pipelined_connection_impl.h',
-      'http/http_pipelined_host.cc',
-      'http/http_pipelined_host.h',
-      'http/http_pipelined_host_capability.h',
-      'http/http_pipelined_host_forced.cc',
-      'http/http_pipelined_host_forced.h',
-      'http/http_pipelined_host_impl.cc',
-      'http/http_pipelined_host_impl.h',
-      'http/http_pipelined_host_pool.cc',
-      'http/http_pipelined_host_pool.h',
-      'http/http_pipelined_stream.cc',
-      'http/http_pipelined_stream.h',
       'http/http_proxy_client_socket.cc',
       'http/http_proxy_client_socket.h',
       'http/http_proxy_client_socket_pool.cc',
@@ -940,8 +926,6 @@
       'quic/reliable_quic_stream.h',
       'quic/spdy_utils.cc',
       'quic/spdy_utils.h',
-      'socket/buffered_write_stream_socket.cc',
-      'socket/buffered_write_stream_socket.h',
       'socket/client_socket_factory.cc',
       'socket/client_socket_factory.h',
       'socket/client_socket_pool.cc',
@@ -1369,13 +1353,6 @@
       'http/http_network_layer_unittest.cc',
       'http/http_network_transaction_ssl_unittest.cc',
       'http/http_network_transaction_unittest.cc',
-      'http/http_pipelined_connection_impl_unittest.cc',
-      'http/http_pipelined_host_forced_unittest.cc',
-      'http/http_pipelined_host_impl_unittest.cc',
-      'http/http_pipelined_host_pool_unittest.cc',
-      'http/http_pipelined_host_test_util.cc',
-      'http/http_pipelined_host_test_util.h',
-      'http/http_pipelined_network_transaction_unittest.cc',
       'http/http_proxy_client_socket_pool_unittest.cc',
       'http/http_request_headers_unittest.cc',
       'http/http_response_body_drainer_unittest.cc',
@@ -1538,7 +1515,6 @@
       'quic/reliable_quic_stream_test.cc',
       'server/http_server_response_info_unittest.cc',
       'server/http_server_unittest.cc',
-      'socket/buffered_write_stream_socket_unittest.cc',
       'socket/client_socket_pool_base_unittest.cc',
       'socket/deterministic_socket_data_unittest.cc',
       'socket/mock_client_socket_pool_manager.cc',