Roll src/third_party/pdfium 19757a1acfeb..4a463d57e9aa (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/19757a1acfeb..4a463d57e9aa


git log 19757a1acfeb..4a463d57e9aa --date=short --no-merges --format='%ad %ae %s'
2018-11-07 tsepez@chromium.org Remove redundancy between CFX_KeyValue and JSGlobalData.
2018-11-07 tsepez@chromium.org Tidy some small TODOs in CFX_GlobalData.
2018-11-07 tsepez@chromium.org Make public IndirectObjectHolder orphan tracking feature.


Created with:
  gclient setdep -r src/third_party/pdfium@4a463d57e9aa

The AutoRoll server is located here: https://autoroll.skia.org/r/pdfium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.



BUG=chromium:901654
TBR=dsinclair@chromium.org

Change-Id: Iaec4b0444581e37c7063fe0df49e77885cea999b
Reviewed-on: https://chromium-review.googlesource.com/c/1324853Reviewed-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@{#606279}

DEPS

@@ -140,7 +140,7 @@ 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': '19757a1acfeb7c6abb052146bd59aae4c4aa7b03',
+  'pdfium_revision': '4a463d57e9aa205bb4d131a62d492f0edec0e2ab',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling openmax_dl
   # and whatever else without interference from each other.