Roll src/third_party/pdfium c86e356c31a9..7891b46fd46e (4 commits)

https://pdfium.googlesource.com/pdfium.git/+log/c86e356c31a9..7891b46fd46e

git log c86e356c31a9..7891b46fd46e --date=short --first-parent --format='%ad %ae %s'
2020-01-16 [email protected] Add nullptr checks prior to accesses of CPDF_Document::GetDocExtension()
2020-01-16 [email protected] Remove unused one-arg form of IsAppearanceValid().
2020-01-16 [email protected] Add test for growing gap in CFDE_TextEditEngine::AdjustGap().
2020-01-16 [email protected] Avoid underflow before calling CFDE_TextEditEngine::AdjustGap().

Created with:
  gclient setdep -r src/third_party/pdfium@7891b46fd46e

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 [email protected] 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

Bug: chromium:1029437
Tbr: [email protected]
Change-Id: I9219e3f50942bdc59bd2c03d723e85040948ef14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2006611
Reviewed-by: chromium-autoroll <[email protected]>
Commit-Queue: chromium-autoroll <[email protected]>
Cr-Commit-Position: refs/heads/master@{#732722}
1 file changed