Because of #2122 I cannot write test for this right now because it will be failing randomly due to that iframe issue. However, if it doesn't fail due to that issue a test like this:
```html
<html>
<head>
<meta charset="utf8" />
<script src="harness.js"></script>
<title>Iframe contentDocument test.</title>
</head>
<body>
<iframe src="test_iframe_contentDocument_inner.html" id="iframe"></iframe>
<script>
waitForExplicitFinish();
var timeout = 100;
var iframe = document.getElementById('iframe');
function test_contentWindow() {
if (!iframe.contentWindow) {
// Iframe not loaded yet, try again.
// No load event for iframe, insert bug number here.
setTimeout(test_contentWindow, timeout);
return;
}
is(iframe.contentDocument.getElementById('test').textContent, 'value');
finish();
}
test_contentWindow();
</script>
</body>
</html>
```
where inner is simply:
```html
<html><body><div id="test">value</div></body></html>
```
passes.
I have added `SameOrigin` method to the `UrlHelper`. I wanted to reuse it in [`constellation.rs` same_script check](f0184a2d01/components/compositing/constellation.rs (L625)) but I it didn't want to compile saying
```
error: unresolved import `dom::urlhelper::UrlHelper`. Maybe a missing `extern crate dom`?
```
So I didn't include it in this PR for now.
There is more discussion about the cross origin iframes in [another issue](https://github.com/servo/servo/issues/3939). In this PR I just added same origin check.
Accepted and closed incoming streams
Added header to for constant use.
Removed extra spaces.
Corrected spacing to conform to coding standards.
Corrected spacing to conform to coding standards.
Corrected spacing to conform with coding standards.
Moving new import next to old import for devtools_traits as specified in comment.
Removed method definition to include as inline code and changed to iter_mut.
Using loops to exit devtools on server exit message and disconnected message to simply break as suggested in the comment.
Removing TODO comment for completed functionality.
Moved the operation for exit of devtools on servo closing outside the match loop.
Removing trailing ';' and adding new line before connection closing loop.
This attempts to implement a bunch of the DOM Level 3 Events spec by implementing the KeyboardEvent interface, the document focus context, and dispatching keyup/keydown/keypress events appropriately. There's also some support for multiline text input that's untested.
