use SkBlendMode instead of SkXfermode
use sk_sp versions of paint setters/getters

Change-Id: I86591a0a8ec92e6039776cbf00424ea24f585b28
diff --git a/libs/hwui/FontRenderer.h b/libs/hwui/FontRenderer.h
index e836c20..dd9c40f 100644
--- a/libs/hwui/FontRenderer.h
+++ b/libs/hwui/FontRenderer.h
@@ -58,7 +58,7 @@
             const BakedOpState* bakedState,
             const ClipBase* clip,
             float x, float y, bool pureTranslate,
-            int alpha, SkXfermode::Mode mode, const SkPaint* paint)
+            int alpha, SkBlendMode mode, const SkPaint* paint)
         : renderer(renderer)
         , bakedState(bakedState)
         , clip(clip)
@@ -79,7 +79,7 @@
     float y;
     bool pureTranslate;
     int alpha;
-    SkXfermode::Mode mode;
+    SkBlendMode mode;
     const SkPaint* paint;
 };