Roll src/third_party/pdfium f8cf36b..80c6ab7 (4 commits)

https://pdfium.googlesource.com/pdfium.git/+log/f8cf36b..80c6ab7


git log f8cf36b..80c6ab7 --date=short --no-merges --format='%ad %ae %s'
2018-06-04 rharrison@chromium.org Convert (void) to static_cast<void> in C++ code
2018-06-04 tsepez@chromium.org Make CJS_Objects track CJS_Runtime (and hence the document itself)
2018-06-04 hnakashima@chromium.org Do not merge content streams to parse them.
2018-06-04 tsepez@chromium.org cjs_globalconsts.cpp need not use v8::Context slots


Created with:
  gclient setdep -r src/third_party/pdfium@80c6ab7

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

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: I4f640aadb45fa7a358ee2349496bd2979452d88c
Reviewed-on: https://chromium-review.googlesource.com/1086039Reviewed-by: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#564275}

DEPS

@@ -126,7 +126,7 @@ 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': 'f8cf36b2a385ed17bc34cf394dfe4e379a563820',
+  'pdfium_revision': '80c6ab7b99bcbd7b940f78dc0cac52c30249f59c',
   # 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.