{"description":"<code>webRequestBlocking</code>","source_file":"webextensions/manifest/optional_permissions.json","support":{"chrome":{"version_added":true},"edge":{"version_added":"79"},"firefox":{"version_added":"55"},"firefox_android":{"version_added":"55"},"opera":{"version_added":true},"safari":{"version_added":false},"safari_ios":{"version_added":false}}}