Roll src/third_party/pdfium 678f5418d36f..b6e7d49ad5f3 (3 commits)

https://pdfium.googlesource.com/pdfium.git/+log/678f5418d36f..b6e7d49ad5f3


git log 678f5418d36f..b6e7d49ad5f3 --date=short --no-merges --format='%ad %ae %s'
2018-08-30 thestig@chromium.org Roll v8 to 19afaa14
2018-08-30 thestig@chromium.org Stop using deprecated V8 APIs in CFXJSE_Value.
2018-08-30 thestig@chromium.org Add check on CGATS memory allocation in littlecms.


Created with:
  gclient setdep -r src/third_party/pdfium@b6e7d49ad5f3

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:872189
TBR=dsinclair@chromium.org

Change-Id: I3b08c657e82321c78a6dee42ac3cf2801ecb2020
Reviewed-on: https://chromium-review.googlesource.com/1197290
Reviewed-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@{#587804}