Roll src/third_party/pdfium c3e55aa23f88..a216865467dd (2 commits)

https://pdfium.googlesource.com/pdfium.git/+log/c3e55aa23f88..a216865467dd

git log c3e55aa23f88..a216865467dd --date=short --first-parent --format='%ad %ae %s'
2020-01-21 tsepez@chromium.org Add doubleclick event handling to pdfium_test_event_helper.cc
2020-01-21 thestig@chromium.org Fix some nits in CPDF_TextPage code.

Created with:
  gclient setdep -r src/third_party/pdfium@a216865467dd

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: chromium:1043510
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I9254e43b033930e1573eccc14e5d5a0e9f8bc9d5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2013907Reviewed-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@{#733917}

DEPS

@@ -201,7 +201,7 @@ 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': 'c3e55aa23f888aaf9334a3fd35c1f49a3179869c',
+  'pdfium_revision': 'a216865467ddf9430fe1207adcd71c2d5318e3bc',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.