Roll src/third_party/pdfium 1f7db295b1de..a5d2bf1131fe (8 commits)

https://pdfium.googlesource.com/pdfium.git/+log/1f7db295b1de..a5d2bf1131fe


git log 1f7db295b1de..a5d2bf1131fe --date=short --no-merges --format='%ad %ae %s'
2018-07-25 thestig@chromium.org Remove CFX_MemoryStream uses in tests.
2018-07-25 tsepez@chromium.org Use struct {Single,Range}Cmap in FPDFAPI_CIDFromCharCode().
2018-07-25 hinoka@google.com README.md: Update waterfall location
2018-07-25 thestig@chromium.org Change CFX_BufferSeekableReadStream to take a span.
2018-07-25 thestig@chromium.org Only build cfx_fileaccess_windows.cpp on Windows.
2018-07-25 thestig@chromium.org Move CPDF_SyntaxParser init methods into ctor.
2018-07-25 hnakashima@chromium.org Disable submit in XFA forms.
2018-07-25 tsepez@chromium.org Introduce ToXMLElement() checked downcast helper function


Created with:
  gclient setdep -r src/third_party/pdfium@a5d2bf1131fe

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:860896,chromium:842503
TBR=dsinclair@chromium.org

Change-Id: If7bcdd2cc19be54976a33cb521e5fe2717fae483
Reviewed-on: https://chromium-review.googlesource.com/1150362Reviewed-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@{#578120}

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': '1f7db295b1deeecb562d6213b3ea17b9168405eb',
+  'pdfium_revision': 'a5d2bf1131fed479195011cbf6463df3612d31f6',
   # 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.