PDF browsing history - v6.50
Ensure we don't modify the original PDF data when sanitizing TrueType
Test for #3263
Merge pull request #2921 from Snuffleupagus/pdf-browsing-history-integrated

PDF browsing history - using window.history
Merge pull request #3265 from yurydelendik/issue-3263

Ensure we don't modify the original PDF data when sanitizing TrueType