Add fuzzer for icc codec

testing/libfuzzer/pdf_codec_icc_fuzzer.cc

+// 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 <cstdint>
+
+#include "core/fxcodec/codec/ccodec_iccmodule.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  CCodec_IccModule icc_module;
+  uint32_t nComponent = 0;
+  void* transform = icc_module.CreateTransform_sRGB(data, size, nComponent);
+
+  if (transform) {
+    FX_FLOAT src[4];
+    FX_FLOAT dst[4];
+    for (int i = 0; i < 4; i++)
+      src[i] = 0.5f;
+    icc_module.SetComponents(nComponent);
+    icc_module.Translate(transform, src, dst);
+    icc_module.DestroyTransform(transform);
+  }
+
+  return 0;
+}