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[XhmikosR]

@mozfreddyb: I have added 2 patches with different approaches. Let me know what you prefer.

The idea is that with this we reduce the requests and generally since the SVGs are small, this should be better.

[mozfreddyb]

We're reducing the amount of requests, but the bytes will be more given that you'll now always download fail and pass. Right?

[XhmikosR]

I believe the total bytes is less with this patch.

[XhmikosR]

Here's the result locally

master:

9 requests
12.32 KB / 11.95 KB transferred
Finish: 264 ms
DOMContentLoaded: 49 ms
load: 208 ms

this:

7 requests
11.82 KB / 10.36 KB transferred
Finish: 114 ms
DOMContentLoaded: 34 ms
load: 51 ms

I'm just not sure

1. which solution we should go with
2. I need to check out the comments before merging this

[mozfreddyb]

Thanks for the measurements. I'm convinced :)