stop using bitmap-filter flags outside of paint itself, as a step towards really changing them into…

src/core/SkBitmapProcState.h

Index: src/core/SkBitmapProcState.h
diff --git a/src/core/SkBitmapProcState.h b/src/core/SkBitmapProcState.h
index a644dd1e021c3453c2144bbc1aa203e48ff9176d..2a2d1ef37a15aba0791fedf596c9f4a0c3a65a3b 100644
--- a/src/core/SkBitmapProcState.h
+++ b/src/core/SkBitmapProcState.h
@@ -86,12 +86,7 @@ struct SkBitmapProcState {
     uint8_t             fInvType;           // chooseProcs
     uint8_t             fTileModeX;         // CONSTRUCTOR
     uint8_t             fTileModeY;         // CONSTRUCTOR
-
-    enum {
-        kNone_BitmapFilter,
-        kBilerp_BitmapFilter,
-        kHQ_BitmapFilter
-    } fFilterQuality;          // chooseProcs
+    uint8_t             fFilterLevel;       // chooseProcs
 
     /** The shader will let us know when we can release some of our resources
       * like scaled bitmaps.