Rename non-aa rect methods on GrDrawContext in anticipation of making them support aa

R=joshualitt@google.com

Review URL: https://codereview.chromium.org/1409753008
diff --git a/src/gpu/GrBlurUtils.cpp b/src/gpu/GrBlurUtils.cpp
index 5d691fb..3d4c00d 100644
--- a/src/gpu/GrBlurUtils.cpp
+++ b/src/gpu/GrBlurUtils.cpp
@@ -42,7 +42,7 @@
     if (!viewMatrix.invert(&inverse)) {
         return false;
     }
-    drawContext->drawNonAARectWithLocalMatrix(clip, *grp, SkMatrix::I(), maskRect, inverse);
+    drawContext->fillRectWithLocalMatrix(clip, *grp, SkMatrix::I(), maskRect, inverse);
     return true;
 }