Added DISALLOW_COPY_AND_ASSIGN to disable copy/assign.

net/quic/iovector.h

 // Copyright 2013 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_IOVECTOR_H_
 #define NET_QUIC_IOVECTOR_H_
 
 #include <stddef.h>
 #include <algorithm>
 #include <vector>
@@ skipping 39 matching lines @@
 //
 // The sequence is the same for readv, except that Consume() in this case is
 // used to change the IOVector to only keep track of description of blocks of
 // memory not yet written to.
 //
 // IOVector does not have any method to change the iovec entries that it
 // accumulates. This is due to the block merging nature of Append(): we'd like
 // to avoid accidentally change an entry that is assembled by two or more
 // Append()'s by simply an index access.
 //
-
 class NET_EXPORT_PRIVATE IOVector {
  public:
   // Provide a default constructor so it'll never be inhibited by adding other
   // constructors.
   IOVector();
   ~IOVector();
 
   // Provides a way to convert system call-like iovec representation to
   // IOVector.
   void AppendIovec(const struct iovec* iov, size_t iovcnt) {
@@ skipping 121 matching lines @@
   // assignment operator to preserve compiler-generated copy/move constructors
   // and assignment operators. Note that since IOVector does not own the
   // actual buffers that the struct iovecs point to, copies and assignments
   // result in a shallow copy of the buffers; resulting IOVectors will point
   // to the same copy of the underlying data.
 };
 
 }  // namespace net
 
 #endif  // NET_QUIC_IOVECTOR_H_