Roll PDFium from 153af9451acd to f6b755916fcf (1 revision)

https://pdfium.googlesource.com/pdfium.git/+log/153af9451acd..f6b755916fcf

2020-10-26 pdfium-autoroll@skia-public.iam.gserviceaccount.com Roll MarkupSafe from f2fb0f21ef1e to 0944e71f4b2c (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: None
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: Ic6937e428ac6f14d9e6ee5bc048476a1da76d126
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2497566Reviewed-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@{#820679}

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': '153af9451acd5eead2a07d144517d2a9349d72fb',
+  'pdfium_revision': 'f6b755916fcf9c927881cc7667a89f09f857ac31',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.