Roll src/third_party/pdfium dc397e0a03e0..e06acb7de1b8 (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/dc397e0a03e0..e06acb7de1b8

git log dc397e0a03e0..e06acb7de1b8 --date=short --first-parent --format='%ad %ae %s'
2020-02-04 tsepez@chromium.org Ensure label item lists are not excessively sized in CXFA_FFListBox.
2020-02-04 tsepez@chromium.org Remove stray comma from elements.inc table.
2020-02-03 tsepez@chromium.org Tidy cpdfsdk_widget.h

Created with:
  gclient setdep -r src/third_party/pdfium@e06acb7de1b8

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

Bug: chromium:1047914
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I75df28f8d6862d161678e40400d410b825624052
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2037555Reviewed-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@{#738309}

DEPS

@@ -196,7 +196,7 @@ 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': 'dc397e0a03e0a1f36b50bcc25ded030716387d4c',
+  'pdfium_revision': 'e06acb7de1b8c9e554c1b8dfa4974aca8ac46190',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.