Roll PDFium from 822333dd25e7 to 627c1580a7ea (4 revisions)

https://pdfium.googlesource.com/pdfium.git/+log/822333dd25e7..627c1580a7ea

2020-12-14 nigi@chromium.org Declare the checksums static in fpdf_flatten_embeddertest.cpp.
2020-12-14 nigi@chromium.org Enable PDFFlattenEmbedderTest.BUG_889099 for Skia/SkiaPaths.
2020-12-14 pdfium-autoroll@skia-public.iam.gserviceaccount.com Roll Jinja2 from a82a4944a7f2 to 11b6b3e5971d (1 revision)
2020-12-14 pdfium-autoroll@skia-public.iam.gserviceaccount.com Roll Code Coverage from 907123f96f40 to 6b21d11a706b (1 revision)

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/+doc/master/autoroll/README.md

Bug: chromium:1500
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I6b64399c4bf31ad41cce512119aeada8a0125766
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2592747Reviewed-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@{#836998}

DEPS

@@ -219,7 +219,7 @@ 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': '822333dd25e7faab57885b91591bfad83cf4815f',
+  'pdfium_revision': '627c1580a7ea0d59a63a0adc87f49d4ffe4d546c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.