Merged the legecy EventPreview stack into the new NativePreviewHandler stack so legacy EventPreviews will only fire if they are at the top of the combined stack.  A previous change took PopupPanels off the legacy stack, which promoted other EventPreview to the top and broke legacy code.

Patch by: jlabanca
Review by: ecc (desk)
Issue: 3285



git-svn-id: https://google-web-toolkit.googlecode.com/svn/releases/1.6@4464 8db76d5a-ed1c-0410-87a9-c151d255dfc7
6 files changed