Roll src/third_party/pdfium 9284a7cf9ba6..bcb9892d16d3 (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/9284a7cf9ba6..bcb9892d16d3


git log 9284a7cf9ba6..bcb9892d16d3 --date=short --no-merges --format='%ad %ae %s'
2019-03-15 tsepez@chromium.org Better bounds check in CFGAS_StringFormatter::GetCategory()
2019-03-14 tsepez@chromium.org Remove stringviews in cfgas_stringformatter.cpp, part2.
2019-03-14 tsepez@chromium.org Cache pattern span in xfa/fgas/crt/cfgas_stringformatter.h


Created with:
  gclient setdep -r src/third_party/pdfium@bcb9892d16d3

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.


TBR=dsinclair@chromium.org

Change-Id: I0c57571b0ed4907cb09043a56f2fd4eead0c1998
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1525458Reviewed-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@{#641108}

DEPS

@@ -153,7 +153,7 @@ 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': '9284a7cf9ba6f105de8c978191b0733e19625755',
+  'pdfium_revision': 'bcb9892d16d3b86d3c8fe70cc8ba0430618ff7d4',
   # 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.