Roll src/third_party/pdfium/ 57f228d75..21dd189fe (1 commit)

https://pdfium.googlesource.com/pdfium.git/+log/57f228d75275..21dd189fe50d

$ git log 57f228d75..21dd189fe --date=short --no-merges --format='%ad %ae %s'
2017-07-14 npm Use CFX_MaybeOwned in CJBig2_TRDProc

Created with:
  roll-dep src/third_party/pdfium


Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls


TBR=dsinclair@chromium.org

Change-Id: I372752bccfc8f5b290bf809a9fe3d75b9c835c27
Reviewed-on: https://chromium-review.googlesource.com/571172
Reviewed-by: <pdfium-deps-roller@chromium.org>
Commit-Queue: <pdfium-deps-roller@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486792}

DEPS

@@ -64,7 +64,7 @@ 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': '57f228d7527594de55951fa05e6082ba62382c57',
+  'pdfium_revision': '21dd189fe50d297dd1224c06319e166c1ac6bae2',
   # 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.