Update WIC Image decoder to unpremul colors before save
Update WIC Image decoder to unpremul colors before save

https://codereview.appspot.com/6826069/



git-svn-id: e8541e15acce502a64c929015570ad1648e548cd@6349 2bbb7eff-a529-9590-31e7-b0007b416f81

Cue/skia,Cue/skia,Cue/skia,Cue/skia