Philip P. Moltmann 366262dc78 Only have a single call into pdfium at a time.
Pdfium is not thread safe and uses global variables, hence no
parallel call pdfium is safe

Fixes: 28705066
Change-Id: I04309ee691bd9cea37587e0af5be2c07ce8c9f2c
(cherry picked from commit 0768a7dc450caf4c873c5b0883a75135536e1546)
2016-08-18 18:20:59 +00:00
..
2016-04-28 10:11:36 -07:00