Roll src/third_party/pdfium/ 232b918d1..4c22dd569 (1 commit)

https://pdfium.googlesource.com/pdfium.git/+log/232b918d1f0f..4c22dd5690cd

$ git log 232b918d1..4c22dd569 --date=short --no-merges --format='%ad %ae %s'
2018-04-03 dsinclair Use Optional to determine if appearance stream as font

Created with:
  roll-dep src/third_party/pdfium
BUG=chromium:827430


The AutoRoll server is located here: https://pdfium-roll.skia.org

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=dsinclair@chromium.org

Change-Id: I30faeebc027568db41b6c9bf5e4d7240cec7dc0d
Reviewed-on: https://chromium-review.googlesource.com/993697
Commit-Queue: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#547849}

DEPS

@@ -106,7 +106,7 @@ 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': '232b918d1f0faec230652f4097b834257a7dbb27',
+  'pdfium_revision': '4c22dd5690cdec725389055bb7c07c300a4b6fe4',
   # 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.