message: Replaced `sequence` with `FrozenArray` in Resize Observer spec
  See:
diff: @@ -20,9 +20,9 @@ callback ResizeObserverCallback = void (FrozenArray<ResizeObserverEntry> entries
  interface ResizeObserverEntry {
  readonly attribute Element target;
  readonly attribute DOMRectReadOnly contentRect;
  - readonly attribute sequence<ResizeObserverSize> borderBoxSize;
  - readonly attribute sequence<ResizeObserverSize> contentBoxSize;
  - readonly attribute sequence<ResizeObserverSize> devicePixelContentBoxSize;
  + readonly attribute FrozenArray<ResizeObserverSize> borderBoxSize;
  + readonly attribute FrozenArray<ResizeObserverSize> contentBoxSize;
  + readonly attribute FrozenArray<ResizeObserverSize> devicePixelContentBoxSize;
  };
  interface ResizeObserverSize {
  @@ -35,5 +35,5 @@ interface ResizeObserverSize {
  interface ResizeObservation {
  readonly attribute Element target;
  readonly attribute ResizeObserverBoxOptions observedBox;
  - readonly attribute sequence<ResizeObserverSize> lastReportedSizes;
  + readonly attribute FrozenArray<ResizeObserverSize> lastReportedSizes;
  };
  