Make SpdyHeaderBlock non-copyable.

net/spdy/spdy_header_block.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.
 
 #ifndef NET_SPDY_SPDY_HEADER_BLOCK_H_
 #define NET_SPDY_SPDY_HEADER_BLOCK_H_
 
 #include <stddef.h>
 
 #include <map>
 #include <memory>
 #include <string>
 
+#include "base/macros.h"
 #include "base/strings/string_piece.h"
 #include "net/base/linked_hash_map.h"
 #include "net/base/net_export.h"
 #include "net/log/net_log.h"
 
 namespace net {
 
 // Allows arg-dependent lookup to work for logging's operator<<.
 using ::operator<<;
 
@@ skipping 21 matching lines @@
 
  public:
   using iterator = MapType::iterator;
   using const_iterator = MapType::const_iterator;
   using value_type = MapType::value_type;
   using reverse_iterator = MapType::reverse_iterator;
 
   class StringPieceProxy;
 
   SpdyHeaderBlock();
-  SpdyHeaderBlock(const SpdyHeaderBlock& other);
+  SpdyHeaderBlock(const SpdyHeaderBlock& other) = delete;
   SpdyHeaderBlock(SpdyHeaderBlock&& other);
   ~SpdyHeaderBlock();
 
-  SpdyHeaderBlock& operator=(const SpdyHeaderBlock& other);
+  SpdyHeaderBlock& operator=(const SpdyHeaderBlock& other) = delete;
   SpdyHeaderBlock& operator=(SpdyHeaderBlock&& other);
+  SpdyHeaderBlock Clone() const;
+
   bool operator==(const SpdyHeaderBlock& other) const;
   bool operator!=(const SpdyHeaderBlock& other) const;
 
   // Provides a human readable multi-line representation of the stored header
   // keys and values.
   std::string DebugString() const;
 
   // These methods delegate to our MapType member.
   iterator begin() { return block_.begin(); }
   iterator end() { return block_.end(); }
@@ skipping 81 matching lines @@
 // to |headers|.  |event_param| must have been created by
 // SpdyHeaderBlockNetLogCallback.  On failure, returns false and clears
 // |headers|.
 NET_EXPORT bool SpdyHeaderBlockFromNetLogParam(
     const base::Value* event_param,
     SpdyHeaderBlock* headers);
 
 }  // namespace net
 
 #endif  // NET_SPDY_SPDY_HEADER_BLOCK_H_