As Bug 73528 comment #71, NavigatorBattery.idl doesn't need to have ScriptExecutionContext. Document can be used instead of ScriptExecutionContext.
Created attachment 134456 [details] Patch
Comment on attachment 134456 [details] Patch One argument constructors should have the "explicit" keyword.
Created attachment 134470 [details] Patch
Comment on attachment 134470 [details] Patch I add explicit keyword to construct. Thank you for your review.
Comment on attachment 134470 [details] Patch Clearing flags on attachment: 134470 Committed r112495: <http://trac.webkit.org/changeset/112495>
All reviewed patches have been landed. Closing bug.