update pdf.js

git-svn-id: https://plugins.svn.wordpress.org/advanced-uploader/trunk@1042807 b8457f37-d9ea-0310-8a92-e5e31aec5664
update pdf.js

git-svn-id: https://plugins.svn.wordpress.org/advanced-uploader/trunk@1042809 b8457f37-d9ea-0310-8a92-e5e31aec5664
update pdf.js

git-svn-id: https://plugins.svn.wordpress.org/advanced-uploader/trunk@1042811 b8457f37-d9ea-0310-8a92-e5e31aec5664