SkPaint::FilterLevel -> SkFilterQuality

clone (+rebase) of https://codereview.chromium.org/1009183002/

BUG=skia:
TBR=scroggo@google.com

Review URL: https://codereview.chromium.org/1014533004
diff --git a/samplecode/SampleTextureDomain.cpp b/samplecode/SampleTextureDomain.cpp
index af511c7..2794a06 100644
--- a/samplecode/SampleTextureDomain.cpp
+++ b/samplecode/SampleTextureDomain.cpp
@@ -47,7 +47,7 @@
         SkRect srcRect;
         SkRect dstRect;
         SkPaint paint;
-        paint.setFilterLevel(SkPaint::kLow_FilterLevel);
+        paint.setFilterQuality(kLow_SkFilterQuality);
 
         // Test that bitmap draws from malloc-backed bitmaps respect
         // the constrained texture domain.