Split up quic_frames.{h,cc} into files for each frame type.

net/quic/core/frames/quic_connection_close_frame.h

Index: net/quic/core/frames/quic_connection_close_frame.h
diff --git a/net/quic/core/frames/quic_connection_close_frame.h b/net/quic/core/frames/quic_connection_close_frame.h
new file mode 100644
index 0000000000000000000000000000000000000000..011878462a4251e4514f904c22a8d9470dfe3b38
--- /dev/null
+++ b/net/quic/core/frames/quic_connection_close_frame.h
@@ -0,0 +1,29 @@
+// Copyright (c) 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.
+
+#ifndef NET_QUIC_CORE_FRAMES_QUIC_CONNECTION_CLOSE_FRAME_H_
+#define NET_QUIC_CORE_FRAMES_QUIC_CONNECTION_CLOSE_FRAME_H_
+
+#include <ostream>
+#include <string>
+
+#include "net/base/net_export.h"
+#include "net/quic/core/quic_error_codes.h"
+
+namespace net {
+
+struct NET_EXPORT_PRIVATE QuicConnectionCloseFrame {
+  QuicConnectionCloseFrame();
+
+  friend NET_EXPORT_PRIVATE std::ostream& operator<<(
+      std::ostream& os,
+      const QuicConnectionCloseFrame& c);
+
+  QuicErrorCode error_code;
+  std::string error_details;
+};
+
+}  // namespace net
+
+#endif  // NET_QUIC_CORE_FRAMES_QUIC_CONNECTION_CLOSE_FRAME_H_