Add an override to SpdyFramerVisitorAdapter.

net/spdy/spdy_framer_decoder_adapter.h

Index: net/spdy/spdy_framer_decoder_adapter.h
diff --git a/net/spdy/spdy_framer_decoder_adapter.h b/net/spdy/spdy_framer_decoder_adapter.h
index d2df45bda9d8443accd652b70d6e6944c70834d5..2ea56ae42aad0bfb9d3f9a0fa3d08371557717b6 100644
--- a/net/spdy/spdy_framer_decoder_adapter.h
+++ b/net/spdy/spdy_framer_decoder_adapter.h
@@ -99,6 +99,10 @@ class SpdyFramerVisitorAdapter : public SpdyFramerVisitorInterface {
   // The visitor needs the original SpdyFramer, not the SpdyFramerDecoderAdapter
   // instance.
   void OnError(SpdyFramer* framer) override;
+  void OnCommonHeader(SpdyStreamId stream_id,
+                      size_t length,
+                      uint8_t type,
+                      uint8_t flags) override;
   void OnDataFrameHeader(SpdyStreamId stream_id,
                          size_t length,
                          bool fin) override;