Roll src/third_party/pdfium dd9ef1c0d58f..c3a91730e33e (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/dd9ef1c0d58f..c3a91730e33e

git log dd9ef1c0d58f..c3a91730e33e --date=short --no-merges --format='%ad %ae %s'
2019-11-01 tsepez@chromium.org Make CPDFSDK_Pageview observable across mouse move callbacks
2019-11-01 dhoss@chromium.org Remove jumbo usage in GN files throughout PDFium
2019-11-01 tsepez@chromium.org Run another embedder test with javascript disabled.

Created with:
  gclient setdep -r src/third_party/pdfium@c3a91730e33e

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

TBR=pdfium-deps-rolls@chromium.org

Bug: chromium:1017494
Change-Id: Ib0f25d57b2868bbec3fc46b5825d6085611dc284
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1896139Reviewed-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@{#711932}

DEPS

@@ -192,7 +192,7 @@ 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': 'dd9ef1c0d58f76247136f68b661622f194d66997',
+  'pdfium_revision': 'c3a91730e33ec37e08413edbb6628d789799ba56',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.