When we attach views lazily from within wasShown, the views get wasShown notification twice.
Created attachment 173495 [details] Patch
Comment on attachment 173495 [details] Patch Attachment 173495 [details] did not pass mac-ews (mac): Output: http://queues.webkit.org/results/14788802 New failing tests: inspector/view-events.html
Comment on attachment 173495 [details] Patch Attachment 173495 [details] did not pass chromium-ews (chromium-xvfb): Output: http://queues.webkit.org/results/14786829 New failing tests: inspector/view-events.html
Committed r134199: <http://trac.webkit.org/changeset/134199>