Reduce SpdyHeaderBlock copies with move semantics.

net/quic/quic_network_transaction_unittest.cc

Index: net/quic/quic_network_transaction_unittest.cc
diff --git a/net/quic/quic_network_transaction_unittest.cc b/net/quic/quic_network_transaction_unittest.cc
index c32c0948fb561927808a6f85ffd9fa7971187df1..998a8f9839f0d19df7e42ebabef9a44e6328a26b 100644
--- a/net/quic/quic_network_transaction_unittest.cc
+++ b/net/quic/quic_network_transaction_unittest.cc
@@ -410,7 +410,7 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       QuicStreamOffset* offset) {
     SpdyPriority priority =
         ConvertRequestPriorityToQuicPriority(DEFAULT_PRIORITY);
@@ -424,7 +424,7 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       QuicStreamOffset* offset,
       QuicTestPacketMaker* maker) {
     SpdyPriority priority =
@@ -439,21 +439,21 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers) {
+      SpdyHeaderBlock headers) {
     return ConstructClientRequestHeadersPacket(
-        packet_number, stream_id, should_include_version, fin, headers, nullptr,
-        &client_maker_);
+        packet_number, stream_id, should_include_version, fin,
+        std::move(headers), nullptr, &client_maker_);
   }
   std::unique_ptr<QuicEncryptedPacket> ConstructClientRequestHeadersPacket(
       QuicPacketNumber packet_number,
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       QuicTestPacketMaker* maker) {
-    return ConstructClientRequestHeadersPacket(packet_number, stream_id,
-                                               should_include_version, fin,
-                                               headers, nullptr, maker);
+    return ConstructClientRequestHeadersPacket(
+        packet_number, stream_id, should_include_version, fin,
+        std::move(headers), nullptr, maker);
   }
 
   std::unique_ptr<QuicEncryptedPacket> ConstructServerResponseHeadersPacket(
@@ -461,10 +461,10 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers) {
+      SpdyHeaderBlock headers) {
     return ConstructServerResponseHeadersPacket(
-        packet_number, stream_id, should_include_version, fin, headers, nullptr,
-        &server_maker_);
+        packet_number, stream_id, should_include_version, fin,
+        std::move(headers), nullptr, &server_maker_);
   }
 
   std::unique_ptr<QuicEncryptedPacket> ConstructServerResponseHeadersPacket(
@@ -472,11 +472,11 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       QuicTestPacketMaker* maker) {
-    return ConstructServerResponseHeadersPacket(packet_number, stream_id,
-                                                should_include_version, fin,
-                                                headers, nullptr, maker);
+    return ConstructServerResponseHeadersPacket(
+        packet_number, stream_id, should_include_version, fin,
+        std::move(headers), nullptr, maker);
   }
 
   std::unique_ptr<QuicEncryptedPacket> ConstructServerResponseHeadersPacket(
@@ -484,7 +484,7 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       QuicStreamOffset* offset) {
     return server_maker_.MakeResponseHeadersPacketWithOffsetTracking(
         packet_number, stream_id, should_include_version, fin, headers, offset);
@@ -495,7 +495,7 @@ class QuicNetworkTransactionTest
       QuicStreamId stream_id,
       bool should_include_version,
       bool fin,
-      const SpdyHeaderBlock& headers,
+      SpdyHeaderBlock headers,
       QuicStreamOffset* offset,
       QuicTestPacketMaker* maker) {
     return server_maker_.MakeResponseHeadersPacketWithOffsetTracking(
@@ -2351,7 +2351,7 @@ class QuicNetworkTransactionWithDestinationTest
     SpdyHeaderBlock headers(maker->GetRequestHeaders("GET", "https", "/"));
     return maker->MakeRequestHeadersPacketWithOffsetTracking(
         packet_number, stream_id, should_include_version, true, priority,
-        headers, offset);
+        std::move(headers), offset);
   }
 
   std::unique_ptr<QuicEncryptedPacket> ConstructClientRequestHeadersPacket(
@@ -2370,7 +2370,7 @@ class QuicNetworkTransactionWithDestinationTest
       QuicTestPacketMaker* maker) {
     SpdyHeaderBlock headers(maker->GetResponseHeaders("200 OK"));
     return maker->MakeResponseHeadersPacketWithOffsetTracking(
-        packet_number, stream_id, false, false, headers, offset);
+        packet_number, stream_id, false, false, std::move(headers), offset);
   }
 
   std::unique_ptr<QuicEncryptedPacket> ConstructServerResponseHeadersPacket(