Revert of Avoids the "re-encode HPACK as SPDY3" step.

net/spdy/buffered_spdy_framer_unittest.cc

Index: net/spdy/buffered_spdy_framer_unittest.cc
diff --git a/net/spdy/buffered_spdy_framer_unittest.cc b/net/spdy/buffered_spdy_framer_unittest.cc
index 700045db5536fb75b3d28cb620194d0e9aa0423c..90f45603788629e1e07dd98125116428dc1c8ccc 100644
--- a/net/spdy/buffered_spdy_framer_unittest.cc
+++ b/net/spdy/buffered_spdy_framer_unittest.cc
@@ -90,6 +90,16 @@
 
   void OnStreamPadding(SpdyStreamId stream_id, size_t len) override {
     LOG(FATAL) << "Unexpected OnStreamPadding call.";
+  }
+
+  SpdyHeadersHandlerInterface* OnHeaderFrameStart(
+      SpdyStreamId stream_id) override {
+    LOG(FATAL) << "Unexpected OnHeaderFrameStart call.";
+    return nullptr;
+  }
+
+  void OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) override {
+    LOG(FATAL) << "Unexpected OnHeaderFrameEnd call.";
   }
 
   void OnSettings(bool clear_persisted) override {}