Simplify QUIC tests by adding a MakeInitialSettingsPacket method

net/http/http_stream_factory_impl_unittest.cc

Index: net/http/http_stream_factory_impl_unittest.cc
diff --git a/net/http/http_stream_factory_impl_unittest.cc b/net/http/http_stream_factory_impl_unittest.cc
index 3d77064ed358d7a88cbf59ec152d609253b6dc5b..9565d7f591aaa9acbbfc68d1e566dbc83e7d7c7a 100644
--- a/net/http/http_stream_factory_impl_unittest.cc
+++ b/net/http/http_stream_factory_impl_unittest.cc
@@ -2267,9 +2267,8 @@ TEST_P(HttpStreamFactoryBidirectionalQuicTest,
       ConvertRequestPriorityToQuicPriority(DEFAULT_PRIORITY);
   size_t spdy_headers_frame_length;
   QuicStreamOffset header_stream_offset = 0;
-  mock_quic_data.AddWrite(client_packet_maker().MakeSettingsPacket(
-      1, SETTINGS_MAX_HEADER_LIST_SIZE, kDefaultMaxUncompressedHeaderSize, true,
-      &header_stream_offset));
+  mock_quic_data.AddWrite(client_packet_maker().MakeInitialSettingsPacket(
+      1, &header_stream_offset));
   mock_quic_data.AddWrite(client_packet_maker().MakeRequestHeadersPacket(
       2, test::kClientDataStreamId1, /*should_include_version=*/true,
       /*fin=*/true, priority,
@@ -2396,9 +2395,8 @@ TEST_P(HttpStreamFactoryBidirectionalQuicTest,
       ConvertRequestPriorityToQuicPriority(DEFAULT_PRIORITY);
   size_t spdy_headers_frame_length;
   QuicStreamOffset header_stream_offset = 0;
-  mock_quic_data.AddWrite(client_packet_maker().MakeSettingsPacket(
-      1, SETTINGS_MAX_HEADER_LIST_SIZE, kDefaultMaxUncompressedHeaderSize, true,
-      &header_stream_offset));
+  mock_quic_data.AddWrite(client_packet_maker().MakeInitialSettingsPacket(
+      1, &header_stream_offset));
   mock_quic_data.AddWrite(client_packet_maker().MakeRequestHeadersPacket(
       2, test::kClientDataStreamId1, /*should_include_version=*/true,
       /*fin=*/true, priority,