Currently, CSS rules defined <style> elements can only be disabled in the top-level document.
devtools.inspectedWindow.eval() is being used to execute JavaScript in the page to collect up CSS text of each <style> element and pass it back to the devtools panel for modification. It should be possible to update the eval'd page script to walk into <iframe> elements that share the same origin, however it would be good to find a solution that works for all documents.
My initial though is to use a content_script / background_page to inject JS into each document and use messages to communicate with the devtools panel.
Currently, CSS rules defined
<style>elements can only be disabled in the top-level document.devtools.inspectedWindow.eval()is being used to execute JavaScript in the page to collect up CSS text of each<style>element and pass it back to the devtools panel for modification. It should be possible to update the eval'd page script to walk into<iframe>elements that share the same origin, however it would be good to find a solution that works for all documents.My initial though is to use a
content_script/background_pageto inject JS into each document and use messages to communicate with the devtools panel.