Cap number of SuspendedPageProxy objects to 3 to avoid accumulating to many "suspended" processes.
Also allow a WebPageProxy to have more than one SuspendedPageProxy so that PageCache works for more than 1 history navigation.
Created attachment 352662 [details]
Created attachment 352663 [details]
Created attachment 352672 [details]
Comment on attachment 352672 [details]
Clearing flags on attachment: 352672
Committed r237257: <https://trac.webkit.org/changeset/237257>
All reviewed patches have been landed. Closing bug.