Reduce SpdyHeaderBlock copies with move semantics in shared code.

net/tools/quic/quic_simple_server_stream.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_TOOLS_QUIC_QUIC_SIMPLE_SERVER_STREAM_H_
 #define NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_STREAM_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 46 matching lines @@
   virtual void SendResponse();
 
   // Sends a basic 500 response using SendHeaders for the headers and WriteData
   // for the body.
   virtual void SendErrorResponse();
 
   // Sends a basic 404 response using SendHeaders for the headers and WriteData
   // for the body.
   void SendNotFoundResponse();
 
-  void SendHeadersAndBody(const SpdyHeaderBlock& response_headers,
+  void SendHeadersAndBody(SpdyHeaderBlock response_headers,
                           base::StringPiece body);
-  void SendHeadersAndBodyAndTrailers(const SpdyHeaderBlock& response_headers,
+  void SendHeadersAndBodyAndTrailers(SpdyHeaderBlock response_headers,
                                      base::StringPiece body,
-                                     const SpdyHeaderBlock& response_trailers);
+                                     SpdyHeaderBlock response_trailers);
 
   SpdyHeaderBlock* request_headers() { return &request_headers_; }
 
   const std::string& body() { return body_; }
 
  private:
   friend class test::QuicSimpleServerStreamPeer;
 
   // The parsed headers received from the client.
   SpdyHeaderBlock request_headers_;
   int64_t content_length_;
   std::string body_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicSimpleServerStream);
 };
 
 }  // namespace net
 
 #endif  // NET_TOOLS_QUIC_QUIC_SIMPLE_SERVER_STREAM_H_