OS X: Update bundled pdfium to r3729

dependencies/pdfium/macx/include/fpdf_catalog.h

@@ -0,0 +1,34 @@
+// Copyright 2017 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.
+
+#ifndef PUBLIC_FPDF_CATALOG_H_
+#define PUBLIC_FPDF_CATALOG_H_
+
+// NOLINTNEXTLINE(build/include)
+#include "fpdfview.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+/**
+ * Experimental API.
+ *
+ * Determine if |document| represents a tagged PDF.
+ *
+ * For the definition of tagged PDF, See (see 10.7 "Tagged PDF" in PDF
+ * Reference 1.7).
+ *
+ *   document - handle to a document.
+ *
+ * Returns |true| iff |document| is a tagged PDF.
+ */
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFCatalog_IsTagged(FPDF_DOCUMENT document);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // PUBLIC_FPDF_CATALOG_H_