[xfa] Remove form checksum abilities

This CL removes the code for verifying and creating checksums associated
with form elements in XFA documents. This was the only code requiring
the SAXReader which has also been removed.

According to the XFA spec and application can decide which parts of the
signatures are supported. This feature is being removed until we
determine if/when it is needed.

Bug: pdfium:1063
Change-Id: Iec2261282340f8fc72a1225d2e0d3e6ddf05edcb
Reviewed-on: https://pdfium-review.googlesource.com/30150
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 0 insertions, 27 deletions

diff --git a/testing/libfuzzer/pdf_cfx_saxreader_fuzzer.cc b/testing/libfuzzer/pdf_cfx_saxreader_fuzzer.cc
deleted file mode 100644
index a811a8e96c..0000000000
--- a/testing/libfuzzer/pdf_cfx_saxreader_fuzzer.cc
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright 2016 The PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include <memory>
-
-#include "core/fxcrt/cfx_memorystream.h"
-#include "core/fxcrt/cfx_seekablestreamproxy.h"
-#include "core/fxcrt/retain_ptr.h"
-#include "core/fxcrt/xml/cfx_saxreader.h"
-
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
-  CFX_SAXReader reader;
-  if (reader.StartParse(pdfium::MakeRetain<CFX_MemoryStream>(
-                            const_cast<uint8_t*>(data), size, false),
-                        0, -1, CFX_SaxParseMode_NotSkipSpace) < 0) {
-    return 0;
-  }
-
-  while (1) {
-    int32_t ret = reader.ContinueParse();
-    if (ret < 0 || ret > 99)
-      break;
-  }
-
-  return 0;
-}