Roll src/third_party/pdfium 53d4f0a4526e..d4906e83d313 (2 commits)

https://pdfium.googlesource.com/pdfium.git/+log/53d4f0a4526e..d4906e83d313


git log 53d4f0a4526e..d4906e83d313 --date=short --no-merges --format='%ad %ae %s'
2018-08-01 thestig@chromium.org Combine date/time format methods in CFXJSE_FormCalcContext.
2018-08-01 thestig@chromium.org Fix a nullptr crash in CXFA_LocaleValue::ValidateValue().


Created with:
  gclient setdep -r src/third_party/pdfium@d4906e83d313

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.



BUG=chromium:868271
TBR=dsinclair@chromium.org

Change-Id: If30315876994c44b83e73e920811987e45fd323b
Reviewed-on: https://chromium-review.googlesource.com/1158127Reviewed-by: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: pdfium-chromium-autoroll <pdfium-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#579744}

DEPS

@@ -129,7 +129,7 @@ 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': '53d4f0a4526ef996caf5005ae84406a9467423f2',
+  'pdfium_revision': 'd4906e83d3133d1ac8d13fc9cedc74f6a1dfc960',
   # 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.