Roll src/third_party/pdfium/ abf16c068..0fbb50c24 (1 commit)

https://pdfium.googlesource.com/pdfium.git/+log/abf16c0682a5..0fbb50c2419e

$ git log abf16c068..0fbb50c24 --date=short --no-merges --format='%ad %ae %s'
2017-04-04 dsinclair Fix assignment to len.

Created with:
  roll-dep src/third_party/pdfium

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

Review-Url: https://codereview.chromium.org/2803533002
Cr-Commit-Position: refs/heads/master@{#461977}

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': 'abf16c0682a545db4e9bae5510dd398a6ae634a3',
+  'pdfium_revision': '0fbb50c2419ee95a95f29a4e757ba2408a4bc6b0',
   # 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.