Add a new SpdyStream::Delegate method to handle trailers

net/spdy/spdy_stream_test_util.cc

Index: net/spdy/spdy_stream_test_util.cc
diff --git a/net/spdy/spdy_stream_test_util.cc b/net/spdy/spdy_stream_test_util.cc
index 4cd526467763385c8a9ff9ae196c2416480571e3..7e10e1cede380c275e164392134b03bc22eaf702 100644
--- a/net/spdy/spdy_stream_test_util.cc
+++ b/net/spdy/spdy_stream_test_util.cc
@@ -33,6 +33,8 @@ void ClosingDelegate::OnDataReceived(scoped_ptr<SpdyBuffer> buffer) {}
 
 void ClosingDelegate::OnDataSent() {}
 
+void ClosingDelegate::OnTrailers(const SpdyHeaderBlock& trailers) {}
+
 void ClosingDelegate::OnClose(int status) {
   DCHECK(stream_);
   stream_->Close();
@@ -69,6 +71,8 @@ void StreamDelegateBase::OnDataReceived(scoped_ptr<SpdyBuffer> buffer) {
 
 void StreamDelegateBase::OnDataSent() {}
 
+void StreamDelegateBase::OnTrailers(const SpdyHeaderBlock& trailers) {}
+
 void StreamDelegateBase::OnClose(int status) {
   if (!stream_.get())
     return;