Add new HTTP/2 and HPACK decoder in net/http2/.

net/http2/decoder/http2_frame_decoder_listener.cc

Index: net/http2/decoder/http2_frame_decoder_listener.cc
diff --git a/net/http2/decoder/http2_frame_decoder_listener.cc b/net/http2/decoder/http2_frame_decoder_listener.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bf62ae4fe25dfdf88a6775aff41fe0becd471ee6
--- /dev/null
+++ b/net/http2/decoder/http2_frame_decoder_listener.cc
@@ -0,0 +1,14 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/http2/decoder/http2_frame_decoder_listener.h"
+
+namespace net {
+
+bool Http2FrameDecoderNoOpListener::OnFrameHeader(
+    const Http2FrameHeader& header) {
+  return true;
+}
+
+}  // namespace net