Update pdfium for windows

dependencies/pdfium/win/public/fpdf_javascript.h

@@ -0,0 +1,77 @@
+// Copyright 2019 The PDFium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PUBLIC_FPDF_JAVASCRIPT_H_
+#define PUBLIC_FPDF_JAVASCRIPT_H_
+
+// NOLINTNEXTLINE(build/include)
+#include "fpdfview.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif  // __cplusplus
+
+// Experimental API.
+// Get the number of JavaScript actions in |document|.
+//
+//   document - handle to a document.
+//
+// Returns the number of JavaScript actions in |document| or -1 on error.
+FPDF_EXPORT int FPDF_CALLCONV
+FPDFDoc_GetJavaScriptActionCount(FPDF_DOCUMENT document);
+
+// Experimental API.
+// Get the JavaScript action at |index| in |document|.
+//
+//   document - handle to a document.
+//   index    - the index of the requested JavaScript action.
+//
+// Returns the handle to the JavaScript action, or NULL on failure.
+// Caller owns the returned handle and must close it with
+// FPDFDoc_CloseJavaScriptAction().
+FPDF_EXPORT FPDF_JAVASCRIPT_ACTION FPDF_CALLCONV
+FPDFDoc_GetJavaScriptAction(FPDF_DOCUMENT document, int index);
+
+// Experimental API.
+// Close a loaded FPDF_JAVASCRIPT_ACTION object.
+
+//   javascript - Handle to a JavaScript action.
+FPDF_EXPORT void FPDF_CALLCONV
+FPDFDoc_CloseJavaScriptAction(FPDF_JAVASCRIPT_ACTION javascript);
+
+// Experimental API.
+// Get the name from the |javascript| handle. |buffer| is only modified if
+// |buflen| is longer than the length of the name. On errors, |buffer| is
+// unmodified and the returned length is 0.
+//
+//   javascript - handle to an JavaScript action.
+//   buffer     - buffer for holding the name, encoded in UTF-16LE.
+//   buflen     - length of the buffer in bytes.
+//
+// Returns the length of the JavaScript action name in bytes.
+FPDF_EXPORT unsigned long FPDF_CALLCONV
+FPDFJavaScriptAction_GetName(FPDF_JAVASCRIPT_ACTION javascript,
+                             FPDF_WCHAR* buffer,
+                             unsigned long buflen);
+
+// Experimental API.
+// Get the script from the |javascript| handle. |buffer| is only modified if
+// |buflen| is longer than the length of the script. On errors, |buffer| is
+// unmodified and the returned length is 0.
+//
+//   javascript - handle to an JavaScript action.
+//   buffer     - buffer for holding the name, encoded in UTF-16LE.
+//   buflen     - length of the buffer in bytes.
+//
+// Returns the length of the JavaScript action name in bytes.
+FPDF_EXPORT unsigned long FPDF_CALLCONV
+FPDFJavaScriptAction_GetScript(FPDF_JAVASCRIPT_ACTION javascript,
+                               FPDF_WCHAR* buffer,
+                               unsigned long buflen);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif  // __cplusplus
+
+#endif  // PUBLIC_FPDF_JAVASCRIPT_H_