We can get rid of some virtual calls and refcounting and stuff.

MozReview-Commit-ID: 2v0r3jtua1O

MozReview-Commit-ID: 6NRoWNqb1pC

Pushed by bzbarsky@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/6fc55ce02ba5 part 1. Get selection faster in some nsTextEditorState methods. r=ehsan https://hg.mozilla.org/integration/mozilla-inbound/rev/32e54e6e8c02 part 2. Use slightly faster APIs for getting the information we want out of a selection when converting it to a text-control selection range. r=ehsan

I had to back this out for failures like https://treeherder.mozilla.org/logviewer.html#?job_id=82842964&repo=mozilla-inbound https://hg.mozilla.org/integration/mozilla-inbound/rev/ee52a1c26048

The issue is the patches for bug 1345237.

Er, bug 1343037.

Pushed by bzbarsky@mozilla.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/5df501fbf40d part 1. Get selection faster in some nsTextEditorState methods. r=ehsan https://hg.mozilla.org/integration/mozilla-inbound/rev/5b1392f47637 part 2. Use slightly faster APIs for getting the information we want out of a selection when converting it to a text-control selection range. r=ehsan

https://hg.mozilla.org/mozilla-central/rev/5df501fbf40d https://hg.mozilla.org/mozilla-central/rev/5b1392f47637