Add a modern API way to know that the navigation gesture snapshot was removed, for WebKitTestRunner
Created attachment 260391 [details]
Attachment 260391 [details] did not pass style-queue:
ERROR: Source/WebKit2/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] 
Total errors found: 1 in 13 files
If any of these errors are false positives, please file a bug against check-webkit-style.
Created attachment 260394 [details]