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/SampleCamera.cpp b/samplecode/SampleCamera.cpp
index af9dbe8..c0d4f4f 100644
--- a/samplecode/SampleCamera.cpp
+++ b/samplecode/SampleCamera.cpp
@@ -83,7 +83,7 @@
 
             paint.setAntiAlias(true);
             paint.setShader(fShaders[fShaderIndex]);
-            paint.setFilterLevel(SkPaint::kLow_FilterLevel);
+            paint.setFilterQuality(kLow_SkFilterQuality);
             SkRect r = { -150, -150, 150, 150 };
             canvas->drawRoundRect(r, 30, 30, paint);
         }