Reduce SpdyHeaderBlock copies with move semantics.

net/quic/quic_stream_factory_test.cc

Index: net/quic/quic_stream_factory_test.cc
diff --git a/net/quic/quic_stream_factory_test.cc b/net/quic/quic_stream_factory_test.cc
index b4e1e7a944b35de848b4525465bc0bc4877c8ce6..a68f4c646f9e71cd8f1d049f0fefc89ecbcf126f 100644
--- a/net/quic/quic_stream_factory_test.cc
+++ b/net/quic/quic_stream_factory_test.cc
@@ -5,6 +5,7 @@
 #include "net/quic/quic_stream_factory.h"
 
 #include <ostream>
+#include <utility>
 
 #include "base/run_loop.h"
 #include "base/strings/string_util.h"
@@ -457,7 +458,7 @@ class QuicStreamFactoryTestBase {
     size_t spdy_headers_frame_len;
     return client_maker_.MakeRequestHeadersPacket(
         packet_number, stream_id, should_include_version, fin, priority,
-        headers, &spdy_headers_frame_len);
+        std::move(headers), &spdy_headers_frame_len);
   }
 
   std::unique_ptr<QuicEncryptedPacket> ConstructOkResponsePacket(
@@ -468,8 +469,8 @@ class QuicStreamFactoryTestBase {
     SpdyHeaderBlock headers = server_maker_.GetResponseHeaders("200 OK");
     size_t spdy_headers_frame_len;
     return server_maker_.MakeResponseHeadersPacket(
-        packet_number, stream_id, should_include_version, fin, headers,
-        &spdy_headers_frame_len);
+        packet_number, stream_id, should_include_version, fin,
+        std::move(headers), &spdy_headers_frame_len);
   }
 
   MockHostResolver host_resolver_;