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

net/spdy/spdy_test_util_common.cc

Index: net/spdy/spdy_test_util_common.cc
diff --git a/net/spdy/spdy_test_util_common.cc b/net/spdy/spdy_test_util_common.cc
index 283c157304dd86749de4d863fbddcd5dcb1375c7..4873ec3cbdaa5fe99df45d4de84b15b58356d7a2 100644
--- a/net/spdy/spdy_test_util_common.cc
+++ b/net/spdy/spdy_test_util_common.cc
@@ -1110,7 +1110,15 @@ SpdyFrame* SpdyTestUtil::ConstructSpdyPushHeaders(
 SpdyFrame* SpdyTestUtil::ConstructSpdyHeaderFrame(int stream_id,
                                                   const char* const headers[],
                                                   int header_count) {
+  return ConstructSpdyHeaderFrame(stream_id, headers, header_count, false);
+}
+
+SpdyFrame* SpdyTestUtil::ConstructSpdyHeaderFrame(int stream_id,
+                                                  const char* const headers[],
+                                                  int header_count,
+                                                  bool fin) {
   SpdyHeadersIR spdy_headers(stream_id);
+  spdy_headers.set_fin(fin);
   AppendToHeaderBlock(headers, header_count,
                       spdy_headers.mutable_header_block());
   return CreateFramer(false)->SerializeFrame(spdy_headers);