Roll src/third_party/pdfium/ 5e0b271b6..ddfa51770 (1 commit)

https://pdfium.googlesource.com/pdfium.git/+log/5e0b271b6935..ddfa5177021f

$ git log 5e0b271b6..ddfa51770 --date=short --no-merges --format='%ad %ae %s'
2018-05-11 tsepez Use more smart pointer types in CPDF_DIBSource.

Created with:
  roll-dep src/third_party/pdfium


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: I384b93f8a78de43c7f16f9ecda2ba3c8eb981255
Reviewed-on: https://chromium-review.googlesource.com/1055671
Commit-Queue: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#557965}

DEPS

@@ -120,7 +120,7 @@ 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': '5e0b271b69355b5692b6afd1cd2c04d08c3b380c',
+  'pdfium_revision': 'ddfa5177021f76b4d84c6fbdce964ab3ca17e046',
   # 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.