Removes the now-unused build target //third_party/spdy/core:http2_header_block_lib.

Protected by BUILD cleanup, not protected.

PiperOrigin-RevId: 678914792

build/source_list.bzl

diff --git a/build/source_list.bzl b/build/source_list.bzl
index 9ecdc00..8dece58 100644
--- a/build/source_list.bzl
+++ b/build/source_list.bzl
@@ -398,7 +398,6 @@
     "quic/platform/api/quic_thread.h",
     "spdy/core/hpack/hpack_decoder_adapter.h",
     "spdy/core/hpack/hpack_encoder.h",
-    "spdy/core/http2_header_block.h",
     "spdy/core/spdy_bitmasks.h",
     "spdy/core/spdy_frame_builder.h",
     "spdy/core/spdy_framer.h",

build/source_list.gni

diff --git a/build/source_list.gni b/build/source_list.gni
index e53a73b..e871ba2 100644
--- a/build/source_list.gni
+++ b/build/source_list.gni
@@ -398,7 +398,6 @@
     "src/quiche/quic/platform/api/quic_thread.h",
     "src/quiche/spdy/core/hpack/hpack_decoder_adapter.h",
     "src/quiche/spdy/core/hpack/hpack_encoder.h",
-    "src/quiche/spdy/core/http2_header_block.h",
     "src/quiche/spdy/core/spdy_bitmasks.h",
     "src/quiche/spdy/core/spdy_frame_builder.h",
     "src/quiche/spdy/core/spdy_framer.h",

build/source_list.json

diff --git a/build/source_list.json b/build/source_list.json
index bafb33a..a6360b6 100644
--- a/build/source_list.json
+++ b/build/source_list.json
@@ -397,7 +397,6 @@
     "quiche/quic/platform/api/quic_thread.h",
     "quiche/spdy/core/hpack/hpack_decoder_adapter.h",
     "quiche/spdy/core/hpack/hpack_encoder.h",
-    "quiche/spdy/core/http2_header_block.h",
     "quiche/spdy/core/spdy_bitmasks.h",
     "quiche/spdy/core/spdy_frame_builder.h",
     "quiche/spdy/core/spdy_framer.h",

quiche/spdy/core/http2_header_block.h

diff --git a/quiche/spdy/core/http2_header_block.h b/quiche/spdy/core/http2_header_block.h
deleted file mode 100644
index 09e17a9..0000000
--- a/quiche/spdy/core/http2_header_block.h
+++ /dev/null
@@ -1,14 +0,0 @@
-// 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 QUICHE_SPDY_CORE_HTTP2_HEADER_BLOCK_H_
-#define QUICHE_SPDY_CORE_HTTP2_HEADER_BLOCK_H_
-
-#include "quiche/common/http/http_header_block.h"
-
-namespace spdy {
-using Http2HeaderBlock = ::quiche::HttpHeaderBlock;
-}  // namespace spdy
-
-#endif  // QUICHE_SPDY_CORE_HTTP2_HEADER_BLOCK_H_