Roll src/third_party/pdfium dacaac7b0f29..4f5d3771dd9f (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/dacaac7b0f29..4f5d3771dd9f

git log dacaac7b0f29..4f5d3771dd9f --date=short --first-parent --format='%ad %ae %s'
2020-04-23 thestig@chromium.org Make more CBC_SymbolInfo improvements.
2020-04-23 tsepez@chromium.org Fix FormCalc NPV() function and enable test.
2020-04-23 thestig@chromium.org Simplify CBC_SymbolInfo initialization.

Created with:
  gclient setdep -r src/third_party/pdfium@4f5d3771dd9f

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: I099c6e2164b44e6d5a92fc6382eace8c350161d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2163709Reviewed-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@{#762139}

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': 'dacaac7b0f299e09b9072710a4f2924102621b9b',
+  'pdfium_revision': '4f5d3771dd9f3dd97fa6124d82572c326335f567',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.