Add an assert to check for attempts to merge new ITP statistics when the network process is suspended. If this assert is hit, it indicates the ITP database thread is not being properly stopped during a call to WebResourceLoadStatisticsStore::suspend().
<rdar://problem/63892899>
Created attachment 400857 [details] Patch
Committed r262455: <https://trac.webkit.org/changeset/262455> All reviewed patches have been landed. Closing bug and clearing flags on attachment 400857 [details].