2018-Q4 2.4 - Update webcompat reporter addons to send POST data

[miketaylr]

Follow up maintenance work on server rewrite.

[miketaylr]

cc @laghee

[wisniewskit]

Related: the in-tree reporter addon now sends reports as POST data as of bz1451485. It required using an experimental API to efficiently POST to the server as part of loading a tab.

But I'm not sure how easy it will be to do the same in the pure webextensions. I'm guessing that we will need to change this code to load a webextension page which just waits for the background script to pass it data, and then writes out a form and submits it with method=POST. But there may be security restrictions which prevent this from working, so it might require some experimentation.

[miketaylr]

@miketaylr needs to file some bugs.

[laghee]

Discussed possibilities with @miketaylr, including suggestion above by @wisniewskit and using a hidden form. Will take some research to get to the experimentation point and time is a little short this month, but I'll try to have a better idea on how to proceed toward the mid/end of November (or, worst case, will bring ideas to AllHands in December).

[laghee]

Haven't had time to look at this so far, but will be prepared to brainstorm in Orlando...

[laghee]

Update: No change. Looking forward to talking about this at AllHands.