chromium/chrome/test/data/extensions/api_test/declarative_net_request/test_match_outcome_response_headers/header_matching_rules.json

[{
  "id": 1,
  "priority": 1,
  "condition": {
    "requestDomains": ["header-matching.example-1"],
    "resourceTypes": ["sub_frame", "main_frame"],
    "responseHeaders": [{"header": "example-header"}]
  },
  "action": {
    "type": "block"
  }
}, {
  "id": 2,
  "priority": 1,
  "condition": {
    "requestDomains": ["excluded-header-matching.example"],
    "resourceTypes": ["sub_frame", "main_frame"],
    "excludedResponseHeaders": [{"header": "nonsense-header"}]
  },
  "action": {
    "type": "block"
  }
}]