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

net/http2/decoder/decode_status.cc

Index: net/http2/decoder/decode_status.cc
diff --git a/net/http2/decoder/decode_status.cc b/net/http2/decoder/decode_status.cc
new file mode 100644
index 0000000000000000000000000000000000000000..99a1de0b5057b25dce4372208f85e68deb7fb2ff
--- /dev/null
+++ b/net/http2/decoder/decode_status.cc
@@ -0,0 +1,27 @@
+// 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/decode_status.h"
+
+#include "base/logging.h"
+
+namespace net {
+
+std::ostream& operator<<(std::ostream& out, DecodeStatus v) {
+  switch (v) {
+    case DecodeStatus::kDecodeDone:
+      return out << "DecodeDone";
+    case DecodeStatus::kDecodeInProgress:
+      return out << "DecodeInProgress";
+    case DecodeStatus::kDecodeError:
+      return out << "DecodeError";
+  }
+  // Since the value doesn't come over the wire, only a programming bug should
+  // result in reaching this point.
+  int unknown = static_cast<int>(v);
+  LOG(DFATAL) << "Unknown DecodeStatus " << unknown << std::hex << unknown;
+  return out << "UnknownDecodeStatus(" << unknown << ")";
+}
+
+}  // namespace net