Update BrowserElement.webidl

[Coder206]

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• ./mach build -d does not report any errors
• ./mach test-tidy does not report any errors
• These changes fix #__ (github issue number if applicable).

• There are tests for these changes OR
• These changes do not require tests because _____

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This change is

[highfive]

Thanks for the pull request, and welcome! The Servo team is excited to review your changes, and you should hear from @wafflespeanut (or someone else) soon.

[highfive]

Heads up! This PR modifies the following files:

• @KiChjang: components/script/dom/webidls/BrowserElement.webidl

[highfive]

Warning

• These commits modify script code, but no tests are modified. Please consider adding a test!

[jdm]

It appears that you haven't compiled the changes. Please do so before making a pull request :)

[Coder206]

@jdm I am new to this, do you mean compile and re upload?

[cbrewster]

@Coder206 your change the webidl file will require some more changes elsewhere, when you compile you should get some errors, those errors will need to be fixed.

[jdm]

When you've made the necessary changes and fixed the tests from #11450, you can commit your changes and push them to this branch and reopen the pull request.

[Coder206]

@jdm and @ConnorGBrewster So you just want me to try to compile and ensure it works on my end before sending it off?

[jdm]

@Coder206 Yes, that makes reviewing the code changes much less effort for us.

[Coder206]

@jdm Sorry for the inconvenience, won't happen again from me.