Roll src/third_party/pdfium/ c3d5c9746..aafdc153a (4 commits)

https://pdfium.googlesource.com/pdfium.git/+log/c3d5c9746384..aafdc153a2b7

$ git log c3d5c9746..aafdc153a --date=short --no-merges --format='%ad %ae %s'
2017-10-03 art-snake Unify CPDF_HintsTable.
2017-10-03 art-snake Improve CPDF_SecurityHandler code style.
2017-10-03 art-snake Simplify CPDF_Parser::GetIDArray
2017-10-03 art-snake Move initialization of CPDF_CryptoHandler into CPDF_SytnaxParser initialization.

Created with:
  roll-dep src/third_party/pdfium


Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls


TBR=dsinclair@chromium.org

Change-Id: I1153553cd93d10897b55f4a7821d36e1c87ca1cf
Reviewed-on: https://chromium-review.googlesource.com/699153
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#506199}

DEPS

@@ -69,7 +69,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.
-  'pdfium_revision': 'c3d5c9746384ccf13617370fbc81397040355c4d',
+  'pdfium_revision': 'aafdc153a2b7609968b315ca6c6900717f6d6c36',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling openmax_dl
   # and whatever else without interference from each other.