Add a new SpdyStream::Delegate method to handle trailers

net/spdy/spdy_stream_test_util.h

Index: net/spdy/spdy_stream_test_util.h
diff --git a/net/spdy/spdy_stream_test_util.h b/net/spdy/spdy_stream_test_util.h
index 66db00cc9378fbb46406f6a9e1db5a32f2a098c3..9c260ea2e0e5f6df4bfffc9dca805be81f42066c 100644
--- a/net/spdy/spdy_stream_test_util.h
+++ b/net/spdy/spdy_stream_test_util.h
@@ -31,6 +31,7 @@ class ClosingDelegate : public SpdyStream::Delegate {
       const SpdyHeaderBlock& response_headers) override;
   void OnDataReceived(scoped_ptr<SpdyBuffer> buffer) override;
   void OnDataSent() override;
+  void OnTrailers(const SpdyHeaderBlock& trailers) override;
   void OnClose(int status) override;
 
   // Returns whether or not the stream is closed.
@@ -52,6 +53,7 @@ class StreamDelegateBase : public SpdyStream::Delegate {
       const SpdyHeaderBlock& response_headers) override;
   void OnDataReceived(scoped_ptr<SpdyBuffer> buffer) override;
   void OnDataSent() override;
+  void OnTrailers(const SpdyHeaderBlock& trailers) override;
   void OnClose(int status) override;
 
   // Waits for the stream to be closed and returns the status passed