Roll PDFium from d564b0d2baa3 to 4643cf651889 (1 revision)

https://pdfium.googlesource.com/pdfium.git/+log/d564b0d2baa3..4643cf651889

2020-11-09 tsepez@chromium.org Avoid allocating CFXJSE_Values for |this| in poperty callbacks

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: None
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I41a2aefe49c86fa62871a71b73f5e3fb77c1b83a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2527501Reviewed-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@{#825479}

DEPS

@@ -226,7 +226,7 @@ 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': 'd564b0d2baa3fe03087780d7b03a55ab3e171d41',
+  'pdfium_revision': '4643cf6518895ebfcc5c1e4ca7249da7879dc19b',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.