Update pdfium to 32b639de35f905a5e5559f305d9032cde5ae5c77

- Also add script to simplify future updates
- Rewrite make files. Now they match the Build.gn files better.

Build is similar to: no skia, no v8, no xfa

Bug: 27564090
Change-Id: I28a8c79fd7f71d600c85b0a4a422d18ca8f1267c
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
new file mode 100644
index 0000000..1ad3a5e
--- /dev/null
+++ b/PRESUBMIT.py
@@ -0,0 +1,14 @@
+# Copyright 2015 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Presubmit script for pdfium.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
+for more details about the presubmit API built into depot_tools.
+"""
+
+def CheckChangeOnUpload(input_api, output_api):
+  results = []
+  results += input_api.canned_checks.CheckPatchFormatted(input_api, output_api)
+  return results