Roll src/third_party/pdfium 89e298161eb3..5dc591fc6198 (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/89e298161eb3..5dc591fc6198

git log 89e298161eb3..5dc591fc6198 --date=short --first-parent --format='%ad %ae %s'
2020-04-24 thestig@chromium.org Give CBC_SymbolInfo methods Chromium-style names.
2020-04-24 thestig@chromium.org Remove unneeded dependency for pdfium_diff target.
2020-04-24 gourabk@microsoft.com Add public API to support forced colors mode

Created with:
  gclient setdep -r src/third_party/pdfium@5dc591fc6198

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: I97a7c753e3095ec49e88bbc4394eda69f7c8ef74
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2165431Reviewed-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@{#762548}

DEPS

@@ -195,7 +195,7 @@ 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': '89e298161eb3ad02d0bd634fc947bef2481005cb',
+  'pdfium_revision': '5dc591fc619846f693becd11ce5f4a8839228f27',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.