Roll src/third_party/pdfium/ 1f0d1fda6..752e9bf89 (6 commits)

https://pdfium.googlesource.com/pdfium.git/+log/1f0d1fda6db8..752e9bf892ab

$ git log 1f0d1fda6..752e9bf89 --date=short --no-merges --format='%ad %ae %s'
2017-12-01 thestig Add CFX_FloatRect::ToRoundedFxRect().
2017-12-01 thestig Add CFX_FloatRect::Scale().
2017-12-01 thestig Rename CFX_FloatRect::Scale() to ScaleFromCenterPoint().
2017-12-01 thestig Remove unused CFX_FloatRect::Substract4().
2017-12-01 thestig Add some CFX_FloatRect unit tests.
2017-12-01 npm Remove unneded structs from CFX_CTTGSUBTable part 2

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: I17774bd6b170e086953b375ea5601f38689dd71a
Reviewed-on: https://chromium-review.googlesource.com/804409
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#521118}

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': '1f0d1fda6db83ee402561902c76ae8a6da124663',
+  'pdfium_revision': '752e9bf892abdf1ee588ba87c857d0783a017b27',
   # 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.