The relevant engineers for these two features tell me that they should NOT be enabled by default for production builds: CSS Spring Animations Link Preload
<rdar://problem/41023774>
Created attachment 342485 [details] Patch
Comment on attachment 342485 [details] Patch Attachment 342485 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/8139581 New failing tests: http/tests/resourceLoadStatistics/partitioned-and-unpartitioned-cookie-with-partitioning-timeout.html
Created attachment 342498 [details] Archive of layout-test-results from ews123 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews123 Port: ios-simulator-wk2 Platform: Mac OS X 10.13.4
Comment on attachment 342485 [details] Patch Attachment 342485 [details] did not pass win-ews (win): Output: http://webkit-queues.webkit.org/results/8143848 New failing tests: http/tests/security/canvas-remote-read-remote-video-blocked-no-crossorigin.html
Created attachment 342520 [details] Archive of layout-test-results from ews205 for win-future The attached test failures were seen while running run-webkit-tests on the win-ews. Bot: ews205 Port: win-future Platform: CYGWIN_NT-6.1-2.9.0-0.318-5-3-x86_64-64bit
Those test failures were not related to this patch.
Comment on attachment 342485 [details] Patch These test failures can't be related, since the EWS build with these changes is identical to the EWS sources without the changes. Only a Production build would see a difference.
Comment on attachment 342485 [details] Patch Clearing flags on attachment: 342485 Committed r232771: <https://trac.webkit.org/changeset/232771>
All reviewed patches have been landed. Closing bug.