Add new, unused methods to SpdyFramerVisitorInterface.

net/spdy/spdy_test_util_common.cc

Index: net/spdy/spdy_test_util_common.cc
diff --git a/net/spdy/spdy_test_util_common.cc b/net/spdy/spdy_test_util_common.cc
index 4cc450e7549d1db7f99f0ce9b199e6e4cbf226dc..d442a474fc1a42cf71bc14e8045e33d23d2a294c 100644
--- a/net/spdy/spdy_test_util_common.cc
+++ b/net/spdy/spdy_test_util_common.cc
@@ -248,6 +248,11 @@ class PriorityGetter : public BufferedSpdyFramerVisitorInterface {
                          size_t len,
                          bool fin) override {}
   void OnStreamPadding(SpdyStreamId stream_id, size_t len) override {}
+  SpdyHeadersHandlerInterface* OnHeaderFrameStart(
+      SpdyStreamId stream_id) override {
+    return nullptr;
+  }
+  void OnHeaderFrameEnd(SpdyStreamId stream_id, bool end_headers) override {}
   void OnSettings(bool clear_persisted) override {}
   void OnSetting(SpdySettingsIds id, uint8 flags, uint32 value) override {}
   void OnPing(SpdyPingId unique_id, bool is_ack) override {}