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.
<rdar://problem/45354095>
Created attachment 352662 [details] Patch
Created attachment 352663 [details] Patch
Created attachment 352672 [details] Patch
Comment on attachment 352672 [details] Patch Clearing flags on attachment: 352672 Committed r237257: <https://trac.webkit.org/changeset/237257>
All reviewed patches have been landed. Closing bug.