Prevent the loadingBar from overlaying the errorWrapper
Split files into worker and main thread pieces.
Show sensible output for showText commands in the stepper.
Don't provide optional pushState parameter
Merge pull request #3530 from brendandahl/worker-split

Split files into worker and main thread pieces.
Merge remote-tracking branch 'mozilla/master' into pushState
IE9 does not need onreadystatechange
Enable loading of PDFs with undefined or missing stream lengths
Merge pull request #3581 from yurydelendik/pushState

Misc IE fixes
Specifies default workerSrc (if possible)
Merge pull request #3575 from brendandahl/text-debugger

Show sensible output for showText commands in the stepper.
Merge pull request #3519 from Snuffleupagus/move-errorWrapper-during-load

Prevent the loadingBar from overlaying the errorWrapper
Merge pull request #3576 from Snuffleupagus/undefined-stream-length

Enable loading of PDFs with undefined or missing stream lengths
Merge pull request #3583 from yurydelendik/workerSrc

Specifies default workerSrc