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I have extension that currently asks for permission for “tabs”, in the new version of my extension I want to use “webRequest” and “webRequestBlocking”.
I know that if an old chrome (version < 17) will try to install my extension (with the new webRequest permissions) it won’t install the extension.
How can I use the permission only for chrome version that supports the permission?
You will have to use the
minimum_chrome_versionfield in themanifest.json. This will unfortunately keep all older versions of Chrome from updating but there isn’t much else you can do.https://code.google.com/chrome/extensions/manifest.html#minimum_chrome_version
Update: Optional permissions were added in version 16. You can use these ask for permission if the APIs are supported. It will be more work to implement even though 90+% of Chrome installs will be on version 17+ by the end of the month.
https://code.google.com/chrome/extensions/permissions.html