May you please migrate it to manifest version 3?
Looking at Chrome's developer documentation:
[!NOTE] As of Manifest V3, the
webRequestBlockingpermission is no longer available for most extensions. ConsiderdeclarativeNetRequest, which enables use of the declarativeNetRequest API. Aside fromwebRequestBlocking, thewebRequestAPI will be unchanged and available for normal use. Policy installed extensions can continue to usewebRequestBlocking.
The
declarativeNetRequestAPI is used to block or modify network requests by specifying declarative rules. This lets extensions modify network requests without intercepting them and viewing their content, thus providing more privacy. https://developer.chrome.com/docs/extensions/reference/api/declarativeNetRequest
It looks like the manifest.json would look something like:
{
"manifest_version": 3,
...,
"permissions": [
"declarativeNetRequest",
"declarativeNetRequestFeedback"
],
"host_permissions": [
"<all_urls>"
],
...,
"declarative_net_request": {
"rule_resources": [{
"id": "ruleset_1",
"enabled": true,
"path": "rules.json"
}]
}
}
And the rules.json file would look something like:
[
{
"id": 1,
"priority": 1,
"action": { "type": "block" },
"condition": { "urlFilter": "example.com", "resourceTypes": ["main_frame"] }
},
{
"id": 2,
"priority": 1,
"action": { "type": "block" },
"condition": { "urlFilter": "anotherexample.com", "resourceTypes": ["main_frame"] }
}
...
]
There's also the concept of "dynamic rules" to consider.