Roll src/third_party/pdfium/ 90555e06b..f0e9c849a (4 commits)

https://pdfium.googlesource.com/pdfium.git/+log/90555e06b0c0..f0e9c849a3fd

$ git log 90555e06b..f0e9c849a --date=short --no-merges --format='%ad %ae %s'
2017-07-28 thestig Use FX_GetUnicodeProperties() in more places.
2017-07-28 rharrison Fix broken coverage_report.py
2017-07-28 thestig Remove unused param from CFX_TxtBreak::AppendChar_PageLoad().
2017-07-28 npm LibTIFF: upstream patch to fix null dereference

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

Change-Id: Idc6f64f540c589b89461f0bdd86115707df28285
Reviewed-on: https://chromium-review.googlesource.com/592646
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490621}

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': '90555e06b0c03777bca17ca423b765b3cb517f56',
+  'pdfium_revision': 'f0e9c849a3fd4efec3d7ee57fc4889814c45b0cd',
   # 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.