09c2d4fe15
First, this CL removes the need to decompose the DrawFilters in Java and instead passes the SkDrawFilter to HWUI directly. This also allows the removal of duplicated logic between HWUI and other Canvas implementations regarding Paint filter levels. Second, the DrawFilter is now stored in the DisplayListRenderer where we apply it to every paint BEFORE it is stored in the DisplayList. This eliminates the need to filter all Paints on playback and removes additional complexity at playback. Finally, as a result of storing the filtered paint we can now do a better job caching the paints. This takes advantage of recent changes in Skia to quickly enable quick hashing and comparison of paint objects. Change-Id: Iec507a2d894827975cc4f1d22241542bb0534b4e