Move shared files in net/quic/ into net/quic/core/

net/quic/quic_blocked_writer_interface.h

-// Copyright (c) 2012 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.
-
-// This is an interface for all objects that want to be notified that
-// the underlying UDP socket is available for writing (not write blocked
-// anymore).
-
-#ifndef NET_QUIC_QUIC_BLOCKED_WRITER_INTERFACE_H_
-#define NET_QUIC_QUIC_BLOCKED_WRITER_INTERFACE_H_
-
-#include <stddef.h>
-
-#include "net/base/net_export.h"
-
-namespace net {
-
-class NET_EXPORT_PRIVATE QuicBlockedWriterInterface {
- public:
-  virtual ~QuicBlockedWriterInterface() {}
-
-  // Called by the PacketWriter when the underlying socket becomes writable
-  // so that the BlockedWriter can go ahead and try writing.
-  virtual void OnCanWrite() = 0;
-};
-
-// Hash pointers as if they were int's, but bring more entropy to the lower
-// bits.
-struct QuicBlockedWriterInterfacePtrHash {
-  std::size_t operator()(const net::QuicBlockedWriterInterface* ptr) const {
-    size_t k = reinterpret_cast<size_t>(ptr);
-    return k + (k >> 6);
-  }
-};
-
-}  // namespace net
-
-#endif  // NET_QUIC_QUIC_BLOCKED_WRITER_INTERFACE_H_