Roll src/third_party/pdfium/ d15ce4c1e..6c8ed646d (1 commit)

https://pdfium.googlesource.com/pdfium.git/+log/d15ce4c1e088..6c8ed646d1fc

$ git log d15ce4c1e..6c8ed646d --date=short --no-merges --format='%ad %ae %s'
2017-05-19 weili Better identify web links by trimming irrelevant chars

Created with:
  roll-dep src/third_party/pdfium
BUG=720578


Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls


TBR=dsinclair@chromium.org

Change-Id: Ib1b36144a82c69fc153fad4271742f82338ec983
Reviewed-on: https://chromium-review.googlesource.com/510062
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#473423}

DEPS

@@ -64,7 +64,7 @@ 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': 'd15ce4c1e088e8bc084b52b0acdb5f0ef6597f95',
+  'pdfium_revision': '6c8ed646d1fcb8cce5a01c843c5149d989e6d5f0',
   # 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.