Roll src/third_party/pdfium 3c04fb3a9464..9346b7c0ed1a (1 commits)

https://pdfium.googlesource.com/pdfium.git/+log/3c04fb3a9464..9346b7c0ed1a

git log 3c04fb3a9464..9346b7c0ed1a --date=short --first-parent --format='%ad %ae %s'
2020-01-09 tsepez@chromium.org Remove several unused enums and structs from public/fpdf_fwlevent.h.

Created with:
  gclient setdep -r src/third_party/pdfium@9346b7c0ed1a

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: None
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I8369932c058c266597ef82438d72a81711ad7f90
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1994109Reviewed-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@{#729969}

DEPS

@@ -201,7 +201,7 @@ 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': '3c04fb3a9464c99334c4b71eb48288da8f56a1cf',
+  'pdfium_revision': '9346b7c0ed1a2adbb1c25095822cdfc08dbfa0c0',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.