Reduce SpdyHeaderBlock copies with move semantics.

net/quic/test_tools/quic_test_packet_maker.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.
 //
 // Provides a simple interface for QUIC tests to create a variety of packets.
 
 #ifndef NET_QUIC_TEST_TOOLS_QUIC_TEST_PACKET_MAKER_H_
 #define NET_QUIC_TEST_TOOLS_QUIC_TEST_PACKET_MAKER_H_
 
 #include <stddef.h>
@@ skipping 96 matching lines @@
       QuicStreamOffset offset,
       base::StringPiece data);
 
   std::unique_ptr<QuicReceivedPacket>
   MakeRequestHeadersAndMultipleDataFramesPacket(
       QuicPacketNumber packet_number,
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
       SpdyPriority priority,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       size_t* spdy_headers_frame_length,
       const std::vector<std::string>& data_writes);
 
   // If |spdy_headers_frame_length| is non-null, it will be set to the size of
   // the SPDY headers frame created for this packet.
   std::unique_ptr<QuicReceivedPacket> MakeRequestHeadersPacket(
       QuicPacketNumber packet_number,
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
       SpdyPriority priority,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       size_t* spdy_headers_frame_length);
 
   std::unique_ptr<QuicReceivedPacket> MakeRequestHeadersPacket(
       QuicPacketNumber packet_number,
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
       SpdyPriority priority,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       size_t* spdy_headers_frame_length,
       QuicStreamOffset* offset);
 
   // Convenience method for calling MakeRequestHeadersPacket with nullptr for
   // |spdy_headers_frame_length|.
   std::unique_ptr<QuicReceivedPacket>
   MakeRequestHeadersPacketWithOffsetTracking(QuicPacketNumber packet_number,
                                              QuicStreamId stream_id,
                                              bool should_include_version,
                                              bool fin,
                                              SpdyPriority priority,
-                                             const SpdyHeaderBlock& headers,
+                                             SpdyHeaderBlock headers,
                                              QuicStreamOffset* offset);
 
   // If |spdy_headers_frame_length| is non-null, it will be set to the size of
   // the SPDY headers frame created for this packet.
   std::unique_ptr<QuicReceivedPacket> MakeResponseHeadersPacket(
       QuicPacketNumber packet_number,
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       size_t* spdy_headers_frame_length,
       QuicStreamOffset* offset);
 
   std::unique_ptr<QuicReceivedPacket> MakeResponseHeadersPacket(
       QuicPacketNumber packet_number,
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       size_t* spdy_headers_frame_length);
 
   // Convenience method for calling MakeResponseHeadersPacket with nullptr for
   // |spdy_headers_frame_length|.
   std::unique_ptr<QuicReceivedPacket>
   MakeResponseHeadersPacketWithOffsetTracking(QuicPacketNumber packet_number,
                                               QuicStreamId stream_id,
                                               bool should_include_version,
                                               bool fin,
-                                              const SpdyHeaderBlock& headers,
+                                              SpdyHeaderBlock headers,
                                               QuicStreamOffset* offset);
 
   SpdyHeaderBlock GetRequestHeaders(const std::string& method,
                                     const std::string& scheme,
                                     const std::string& path);
   SpdyHeaderBlock GetResponseHeaders(const std::string& status);
 
   SpdyHeaderBlock GetResponseHeaders(const std::string& status,
                                      const std::string& alt_svc);
 
@@ skipping 17 matching lines @@
   QuicPacketHeader header_;
   Perspective perspective_;
 
   DISALLOW_COPY_AND_ASSIGN(QuicTestPacketMaker);
 };
 
 }  // namespace test
 }  // namespace net
 
 #endif  // NET_QUIC_TEST_TOOLS_QUIC_TEST_PACKET_MAKER_H_