Move QuicIoVector into its own header file. No behavior change.

net/quic/core/quic_utils.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.
 //
 // Some helpers for quic.
 
 #ifndef NET_QUIC_CORE_QUIC_UTILS_H_
 #define NET_QUIC_CORE_QUIC_UTILS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <string>
 
 #include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "net/base/int128.h"
 #include "net/base/net_export.h"
+#include "net/quic/core/quic_iovector.h"
 #include "net/quic/core/quic_protocol.h"
 
 #ifdef _MSC_VER
 // MSVC 2013 and prior don't have alignof or aligned(); they have __alignof and
 // a __declspec instead.
 #define QUIC_ALIGN_OF __alignof
 #define QUIC_ALIGNED(X) __declspec(align(X))
 #else
 #define QUIC_ALIGN_OF alignof
 #define QUIC_ALIGNED(X) __attribute__((aligned(X)))
@@ skipping 114 matching lines @@
 inline QuicIOVector MakeIOVector(base::StringPiece str, struct iovec* iov) {
   iov->iov_base = const_cast<char*>(str.data());
   iov->iov_len = static_cast<size_t>(str.size());
   QuicIOVector quic_iov(iov, 1, str.size());
   return quic_iov;
 }
 
 }  // namespace net
 
 #endif  // NET_QUIC_CORE_QUIC_UTILS_H_