Roll src/third_party/pdfium bcdac2a1318b..26b030de1b76 (6 commits)

https://pdfium.googlesource.com/pdfium.git/+log/bcdac2a1318b..26b030de1b76

git log bcdac2a1318b..26b030de1b76 --date=short --no-merges --format='%ad %ae %s'
2019-11-22 thestig@chromium.org Load the first-page xref stream in linearized PDFs.
2019-11-22 thestig@chromium.org Fix LoadLinearizedAllCrossRefV4() to work properly.
2019-11-22 thestig@chromium.org Clean up some xref code in CPDF_Parser.
2019-11-22 tsepez@chromium.org Allocate CFX_Font::m_FontDataAllocation from the partition.
2019-11-21 tsepez@chromium.org Add another malloc(0) test.
2019-11-21 nigi@chromium.org Add a test for a non-embedded font with illegal CIDToGIDMap string.

Created with:
  gclient setdep -r src/third_party/pdfium@26b030de1b76

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:1021762
Tbr: pdfium-deps-rolls@chromium.org
Change-Id: I94e8e3ac447914908e85a91a614e1658b141b959
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1930467Reviewed-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@{#718221}

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': 'bcdac2a1318b898813da55a488e49f2a9e38ad21',
+  'pdfium_revision': '26b030de1b76577df2b5af6d9a390ac7b292ba68',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling BoringSSL
   # and whatever else without interference from each other.