#13018 XFA - Create Form DOM in merging template and data trees
#13015 JS - Avoid a popup to ask for updating Acrobat.
#13078 Disable intermittent unit test "creates pdf doc from non-existent URL"
#13074 Re-factor the PDFScriptingManager._destroyScripting method (PR 13042 follow-up)
#13081 Replace the objectFromEntries helper function with an objectFromMap one instead, and simplify the data lookup in the AnnotationStorage.getValue method
#13085 Ensure that all errors are handled in rasterizeTextLayer/rasterizeAnnotationLayer
#13090 Enable the ESLint no-var rule in gulpfile.js
#13079 Ensure that getDocument handles Node.js Buffers more gracefully (issue 13075)
#13087 Enable the ESLint no-var rule in the examples/ folder
#13084 Enable the ESLint no-var rule in a few font-parsing files, and convert src/core/type1_parser.js to use "standard" classes
#13092 Enable the ESLint no-var rule in the importL10n/ folder
#13091 Enable the ESLint no-var rule globally
#13093 Enable the ESLint no-var rule in the external/builder/ folder
#13097 Enable the ESLint no-var rule in test/add_test.js
#13096 Enable the ESLint no-var rule in the test/stats/ folder
#13095 Enable linting of the external/cmapscompress/ folder
#13098 Enable the ESLint no-var rule in the external/ folder
#13094 Enable the no-var linting rule for src/core/{operator_list, pattern}.js
#13101 print: Remove invalid @supports condition.
#13100 print: Ensure print containers have the right size and don't create overflow.
#13102 print: RFC: Center when printing a PDF with smaller size than the output page.
#13104 Ensure that printing, triggered from scripting, won't accidentally throw in PDFScriptingManager._updateFromSandbox
#13106 Support LineAnnotations with empty /Rect-entries (issue 6564)

https://hg.mozilla.org/mozilla-central/rev/76498fe8274a

This helped out a lot with the problems described in bug 1693989 (see bug 1693989 comment 8). \o/