Sanitize CJBig2_SymbolDict's memory usage.

third_party/BUILD.gn

 # Copyright 2014 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.
 
 group("third_party") {
   deps = [
     ":bigint",
     ":fx_freetype",
     ":pdfium_base",
   ]
@@ skipping 282 matching lines @@
     "//third_party/pdfium:pdfium_config",
   ]
   sources = [
     "base/logging.h",
     "base/macros.h",
     "base/nonstd_unique_ptr.h",
     "base/numerics/safe_conversions.h",
     "base/numerics/safe_conversions_impl.h",
     "base/numerics/safe_math.h",
     "base/numerics/safe_math_impl.h",
+    "base/stl_util.h",
     "base/template_util.h",
   ]
 }