Bug 1730284 Comment 7 Edit History

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Original comment by
on 
Ah, d'oh, I didn't realize there were premade files, I just saw the big blue button.

So the relevant iframe is styled like this:

```
#inspect {
  position: fixed;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border: none;
}
```

And is same-origin. Just using `width: 1px; height: 1px;` or so makes it fast... So we're hitting this code-path: https://searchfox.org/mozilla-central/rev/88792eff309001778cb2431f2a0ed92f8f3c258a/dom/base/Document.cpp#7064

Olli, so... This code comes from bug 1145439.
Revision 1 by
on 
Ah, d'oh, I didn't realize there were premade files, I just saw the big blue button.

So the relevant iframe is styled like this:

```
#inspect {
  position: fixed;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border: none;
}
```

And is same-origin. Just using `width: 1px; height: 1px;` or so makes it fast... So we're hitting this code-path: https://searchfox.org/mozilla-central/rev/88792eff309001778cb2431f2a0ed92f8f3c258a/dom/base/Document.cpp#7064

So... This code comes from bug 1145439.

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