Roll src/third_party/pdfium/ ef3828368..fd5ae3f7c (1 commit).

https://pdfium.googlesource.com/pdfium.git/+log/ef38283688c1..fd5ae3f7cf07

$ git log ef3828368..fd5ae3f7c --date=short --no-merges --format='%ad %ae %s'
2016-10-21 npm Revert of Fix loading page using hint tables. (patchset #5 id:80001 of https://codereview.chromium.org/2437773003/ )

BUG=658168,658170

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

Review-Url: https://chromiumcodereview.appspot.com/2441783004
Cr-Commit-Position: refs/heads/master@{#426873}

DEPS

@@ -63,7 +63,7 @@ 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': 'ef38283688c1ee7c08bcf4204cfb78e09c039782',
+  'pdfium_revision': 'fd5ae3f7cf077d00af0ce3082376f4051c499c5d',
   # 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.