Added a net::BidirectionalStream to expose a bidirectional streaming interface

net/net.gypi

Index: net/net.gypi
diff --git a/net/net.gypi b/net/net.gypi
index 9d5c3c5975ad37fa2d70a3242fb3e43878b84629..6b960743854e229d7aafef6313defc941744be25 100644
--- a/net/net.gypi
+++ b/net/net.gypi
@@ -847,6 +847,10 @@
       'http/http_basic_state.h',
       'http/http_basic_stream.cc',
       'http/http_basic_stream.h',
+      'http/bidirectional_stream_job.cc',
+      'http/bidirectional_stream_job.h',
+      'http/bidirectional_stream.cc',
+      'http/bidirectional_stream.h',
       'http/http_cache.cc',
       'http/http_cache.h',
       'http/http_cache_transaction.cc',
@@ -1097,6 +1101,8 @@
       'spdy/hpack/hpack_output_stream.h',
       'spdy/hpack/hpack_static_table.cc',
       'spdy/hpack/hpack_static_table.h',
+      'spdy/bidirectional_stream_spdy_job.cc',
+      'spdy/bidirectional_stream_spdy_job.h',
       'spdy/spdy_alt_svc_wire_format.cc',
       'spdy/spdy_alt_svc_wire_format.h',
       'spdy/spdy_bitmasks.h',
@@ -1414,6 +1420,7 @@
       'ftp/ftp_directory_listing_parser_windows_unittest.cc',
       'ftp/ftp_network_transaction_unittest.cc',
       'ftp/ftp_util_unittest.cc',
+      'http/bidirectional_stream_unittest.cc',
       'http/des_unittest.cc',
       'http/disk_based_cert_cache_unittest.cc',
       'http/disk_cache_based_quic_server_info_unittest.cc',
@@ -1678,6 +1685,7 @@
       'spdy/hpack/hpack_output_stream_test.cc',
       'spdy/hpack/hpack_round_trip_test.cc',
       'spdy/hpack/hpack_static_table_test.cc',
+      'spdy/bidirectional_stream_spdy_job_unittest.cc',
       'spdy/mock_spdy_framer_visitor.cc',
       'spdy/mock_spdy_framer_visitor.h',
       'spdy/spdy_alt_svc_wire_format_test.cc',