Roll src/third_party/pdfium eb590e0e22e9..1d3ff52a37c7 (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/eb590e0e22e9..1d3ff52a37c7

git log eb590e0e22e9..1d3ff52a37c7 --date=short --no-merges --format='%ad %ae %s'
2019-09-09 thestig@chromium.org Fix out of bound read in PDF_DecodeText().
2019-09-09 bebeaudr@microsoft.com PDF a11y: new API for font-weight
2019-09-07 thestig@chromium.org Simplify CPDF_CMap ctor.

Created with:
  gclient setdep -r src/third_party/pdfium@1d3ff52a37c7

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/pdfium-autoroll
Please CC pdfium-deps-rolls@chromium.org on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

TBR=pdfium-deps-rolls@chromium.org

Bug: chromium:1001159,chromium:985604
Change-Id: Ib6fc0b8abd36d50385d4509937a90eb1c28f455f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1793234Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#694882}

DEPS

@@ -182,7 +182,7 @@ 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': 'eb590e0e22e9119779befd7d5d6763b0dac91119',
+  'pdfium_revision': '1d3ff52a37c75d29c7d08483a042ef33266a9baf',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.