[webkit-reviews] review requested: [Bug 64973] Add [Optional=CallWithDefaultValue] flag and use it in initXXXEvent declarations : [Attachment 101756] Patch

[bugzilla-daemon at webkit.org]

Mark Pilgrim <pilgrim at chromium.org> has asked  for review:
Bug 64973: Add [Optional=CallWithDefaultValue] flag and use it in initXXXEvent
declarations
https://bugs.webkit.org/show_bug.cgi?id=64973

Attachment 101756: Patch
https://bugs.webkit.org/attachment.cgi?id=101756&action=review