Roll src/third_party/pdfium/ d92073b75..667fa571d (2 commits)

https://pdfium.googlesource.com/pdfium.git/+log/d92073b75627..667fa571db51

$ git log d92073b75..667fa571d --date=short --no-merges --format='%ad %ae %s'
2017-12-15 hnakashima Validate base color space of Indexed color spaces.
2017-12-15 hnakashima Validate shading pattern's ColorSpace. It cannot be a Pattern CS.

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: I85043b9fd2a697d9e39521560c165cdd1e510b2f
Reviewed-on: https://chromium-review.googlesource.com/829987
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#524459}

DEPS

@@ -98,7 +98,7 @@ 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': 'd92073b756277d2d4c9c839dd5ac8fa0e8bb9e28',
+  'pdfium_revision': '667fa571db51cbd53e012898f11ead7172e9263c',
   # 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.