Roll src/third_party/pdfium c75ce35aa1a7..44034bca7d3e (5 commits)

https://pdfium.googlesource.com/pdfium.git/+log/c75ce35aa1a7..44034bca7d3e


git log c75ce35aa1a7..44034bca7d3e --date=short --no-merges --format='%ad %ae %s'
2019-04-09 tsepez@chromium.org Make CXFA_TraverseStrategy_ViewLayoutItem private to cxfa_layoutpagemgr.cpp.
2019-04-09 thestig@chromium.org Prevent out of bound access inside CXFA_LayoutPageMgr.
2019-04-09 tsepez@chromium.org Rename CXFA_ContainerLayoutItem to CXFA_ViewLayoutItem.
2019-04-09 thestig@chromium.org Switch from vector to deque for some CXFA_FFDocView members.
2019-04-08 tsepez@chromium.org Correct hierarchy description in xfa/fxfa/README.md


Created with:
  gclient setdep -r src/third_party/pdfium@44034bca7d3e

The AutoRoll server is located here: https://autoroll.skia.org/r/pdfium-autoroll

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:925787
TBR=dsinclair@chromium.org

Change-Id: I2b1c7473324b228a52aff4aada9295baa0c10833
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1560393Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#649321}

DEPS

@@ -149,7 +149,7 @@ 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': 'c75ce35aa1a75ab3aed909dad553a46719db2f48',
+  'pdfium_revision': '44034bca7d3eda87b7e7f38d9cf695fde9a312dd',
   # 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.