// FIXME: 2. If accessor's active document's origin or any of its ancestors' active document's origins are not same origin with accessor's top-level browsing context's active document's origin, or if accessed's active document's origin or any of its ancestors' active document's origins are not same origin with accessed's top-level browsing context's active document's origin, then return.
// NOTE: This avoids leaking information about cross-origin iframes to a top level frame with cross-origin opener policy reporting.
// FIXME: 3. If accessor's top-level browsing context's virtual browsing context group ID is accessed's top-level browsing context's virtual browsing context group ID, then return.
// 4. Let accessorAccessedRelationship be a new accessor-accessed relationship with value none.
// 5. If accessed's top-level browsing context's opener browsing context is accessor or an ancestor of accessor, then set accessorAccessedRelationship to accessor is opener.
// 6. If accessor's top-level browsing context's opener browsing context is accessed or an ancestor of accessed, then set accessorAccessedRelationship to accessor is openee.