Fixed warning on WebKit and preventDefault in fake key function.
Fixed warning on WebKit and preventDefault in fake key function.

ikuchmin/tinymce,aduth/tinymce,fhchina/tinymce,ChristophKaser/tinymce,ice8lue/tinymce,simachewh/tinymce,fashionsun/tinymce,pmpl-5/tinymce,tinymce/tinymce,collective/tinymce,danchr/tinymce,widgetfactory/tinymce,danchr/tinymce,1099511627776/tinymce,FernCreek/tinymce,adaptiffdesigns/tinymce,danielpunkass/tinymce,Shopify/tinymce,TeamupCom/tinymce,mplank/tinymce,jtark/tinymce,FernCreek/tinymce,rednose-public/tinymce,MediehusetTek/tinymce,fhchina/tinymce,shilpi230/tinymce,M4R7iNP/tinymce,ETSI-CTI/TinySpecMCE,collective/tinymce,sjbufton/tinymce,cclaerhout/tinymce,1099511627776/tinymce,ikuchmin/tinymce,leofeyer/tinymce,ChristophKaser/tinymce,Razzwan/tinymce,enfold/tinymce,ETSI-CTI/TinySpecMCE,FernCreek/tinymce,gabixdev/tinymce,VioletLife/tinymce,simachewh/tinymce,ice8lue/tinymce,gencer/tinymce,tinymce/tinymce,fashionsun/tinymce,MediehusetTek/tinymce,VioletLife/tinymce,jtark/tinymce,blakewallan/tinymce,fillabs/TinySpecMCE,shilpi230/tinymce,endjin/tinymce,support-dot-com/tinymce,nikolas/tinymce,gencer/tinymce,nbcp/tinymce,support-dot-com/tinymce,leofeyer/tinymce,rbecheras/tinymce,bsuh/tinymce,endjin/tinymce,sachgits/tinymce,danielpunkass/tinymce,rbecheras/tinymce,aduth/tinymce,Razzwan/tinymce,rxl194/tinymce,danielpunkass/tinymce,cclaerhout/tinymce,Kindling/tinymce,howanghk/tinymce,TeamupCom/tinymce,Zimbra/tinymce,kencheung/tinymce,pmpl-5/tinymce,blakewallan/tinymce,enfold/tinymce,jashua212/tinymce,nbcp/tinymce,toxalot/tinymce,rednose-public/tinymce,henrythewasp/tinymce,sjbufton/tinymce,henrythewasp/tinymce,widgetfactory/tinymce,fillabs/TinySpecMCE,kencheung/tinymce,adaptiffdesigns/tinymce,nikolas/tinymce,rxl194/tinymce,gabixdev/tinymce,M4R7iNP/tinymce,dziemian007/tinymce,sachgits/tinymce,toxalot/tinymce,tinymce/tinymce,Kindling/tinymce,jashua212/tinymce,Zimbra/tinymce,dziemian007/tinymce,bsuh/tinymce,howanghk/tinymce,mplank/tinymce