Revert 272793 "Roll pdfium to 887dc5d8..."

> Roll pdfium to 887dc5d8
> 
> TBR=tapted@chromium.org
> 
> Review URL: https://codereview.chromium.org/297363002

TBR=raymes@google.com

Review URL: https://codereview.chromium.org/302583002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@272796 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -76,7 +76,7 @@ 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": "887dc5d85a487e0a071099b58f1ea2235602a0ab",
+  "pdfium_revision": "3ce25e68aa8f6d4b880ce4e0e9f123d117fcbd0c",
 }
 
 deps = {