Add PushResponse() in QuicSimpleServerStream.

net/tools/quic/quic_simple_server_stream.cc

Index: net/tools/quic/quic_simple_server_stream.cc
diff --git a/net/tools/quic/quic_simple_server_stream.cc b/net/tools/quic/quic_simple_server_stream.cc
index e8d028c7e49d323429e0b0c5aa2bb54d83c14ac3..3a85d84b79f9fea8fd46e3a2fc4328138653b78f 100644
--- a/net/tools/quic/quic_simple_server_stream.cc
+++ b/net/tools/quic/quic_simple_server_stream.cc
@@ -96,6 +96,22 @@ void QuicSimpleServerStream::OnDataAvailable() {
   SendResponse();
 }
 
+void QuicSimpleServerStream::PushResponse(
+    SpdyHeaderBlock push_request_headers) {
+  if (id() % 2 != 0) {
+    LOG(DFATAL) << "Client initiated stream shouldn't be used "
+                << "as promised stream.";
+    return;
+  }
+  // Change the stream state to emulate a client request.
+  request_headers_ = push_request_headers;
+  content_length_ = 0;
+  DVLOG(1) << "Stream " << id() << ": Ready to receive server push response.";
+
+  // Set as if stream decompresed the headers and received fin.
+  QuicSpdyStream::OnInitialHeadersComplete(/*fin=*/true, 0);
+}
+
 void QuicSimpleServerStream::SendResponse() {
   if (!ContainsKey(request_headers_, ":authority") ||
       !ContainsKey(request_headers_, ":path")) {