Roll src/third_party/pdfium 881c56bc0687..9fafe62237ad (7 commits)

https://pdfium.googlesource.com/pdfium.git/+log/881c56bc0687..9fafe62237ad

git log 881c56bc0687..9fafe62237ad --date=short --no-merges --format='%ad %ae %s'
2019-09-11 thestig@chromium.org Roll v8/ 33faa512c..9ddd0c4c1 (521 commits)
2019-09-11 thestig@chromium.org Roll tools/clang/ 656fd11bb..2fef805e5 (7 commits)
2019-09-11 thestig@chromium.org Roll build/ 127a04882..f3a03b22d (102 commits; 1 trivial rolls)
2019-09-11 thestig@chromium.org Roll DEPS to update to Clang 10.0.
2019-09-11 thestig@chromium.org Roll DEPS to upgrade Android NDK to r20.
2019-09-11 thestig@chromium.org Roll build/ f0964b29a..b9e0d9224 (18 commits)
2019-09-10 nigi@chromium.org [SkiaPaths] Merge |m_positions| and |m_glyphs| into a new class.

Created with:
  gclient setdep -r src/third_party/pdfium@9fafe62237ad

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: None
Change-Id: I63e6941f61343a4604d36bacee1423572b2f74af
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1797489Reviewed-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@{#695517}

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': '881c56bc068704d45398bd7dedd7dcab6461e999',
+  'pdfium_revision': '9fafe62237ad4cf5c502f9f81a5ce302fc69db3c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.