Roll src/third_party/pdfium 40ec586a32ab..a8f7a450950b (11 commits)

https://pdfium.googlesource.com/pdfium.git/+log/40ec586a32ab..a8f7a450950b


git log 40ec586a32ab..a8f7a450950b --date=short --no-merges --format='%ad %ae %s'
2019-06-05 thestig@chromium.org Add a pixel test for rendering triangles.
2019-06-04 thestig@chromium.org Roll testing/corpus/ 5a68e8785..db4764592 (1 commit)
2019-06-04 tsepez@chromium.org Move cba_fontmap.{h,cpp} from fpdfsdk/ down to core/fpdfdoc.
2019-06-04 tsepez@chromium.org fuzzers: avoid double initialization in CCodec_ModuleMgr
2019-06-04 tsepez@chromium.org Remove font-related methods from CFX_SystemHandler.
2019-06-04 tsepez@chromium.org Remove one circular .h inclusion from cba_fontmap.cpp.
2019-06-04 thestig@chromium.org Avoid undefined behavior in CFX_ImageStretcher.
2019-06-04 tsepez@chromium.org Remove second stray dependence from xfa/fxfa to fpdfapi.
2019-06-04 thestig@chromium.org Remove unused variable from fixup_pdf_template.py.
2019-06-04 metzman@chromium.org Add pdfium fuzzing stub for LPM fuzzer
2019-06-04 thestig@chromium.org Fix a nit in CPDF_PageContentGenerator::ProcessImage().


Created with:
  gclient setdep -r src/third_party/pdfium@a8f7a450950b

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:725555,chromium:86459,chromium:970137,chromium:964872,chromium:969811
TBR=pdfium-deps-rolls@chromium.org

Change-Id: I12fcccdb880193670716f6bf9e8bb3b02c521123
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1644402
Reviewed-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@{#666139}