+++ This bug was initially created as a clone of Bug #691151 +++ This is not standard and has a standard alternative (defaultPrevented property). There is no reason to keep this around forever.
Created attachment 753617 [details] [diff] [review] Add a deprecation warning to getPreventDefault https://tbpl.mozilla.org/?tree=Try&rev=578426a424f9
Reverted (see bug 691151 for details). https://hg.mozilla.org/integration/mozilla-inbound/rev/f3afa7937265
Fixed call sites, relanding. https://hg.mozilla.org/integration/mozilla-inbound/rev/dd8f0acfc948
Mentioned in the compatibility document: https://developer.mozilla.org/en-US/docs/Site_Compatibility_for_Firefox_24 The method has already been marked deprecated in other documents.