Remove the low hanging fruit with coord change matrices

src/effects/SkBlurMaskFilter.cpp

Index: src/effects/SkBlurMaskFilter.cpp
diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index b849c74805cc2e088e507ac4d0deb8198978d1c3..729068acd3925d868181f9e765b9a03c6e8f0014 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -864,13 +864,13 @@ bool SkBlurMaskFilterImpl::directFilterMaskGPU(GrContext* context,
         return false;
     }
 
-    if (!grp->localCoordChangeInverse(viewMatrix)) {
-        return false;
-    }
-
     grp->addCoverageProcessor(fp);
 
-    context->drawRect(*grp, SkMatrix::I(), rect);
+    SkMatrix inverse;
+    if (!viewMatrix.invert(&inverse)) {
+        return false;
+    }
+    context->drawNonAARectWithLocalMatrix(*grp, SkMatrix::I(), rect, inverse);
     return true;
 }
 
@@ -1146,13 +1146,13 @@ bool SkBlurMaskFilterImpl::directFilterRRectMaskGPU(GrContext* context,
         return false;
     }
 
-    if (!grp->localCoordChangeInverse(viewMatrix)) {
-        return false;
-    }
-
     grp->addCoverageProcessor(fp);
 
-    context->drawRect(*grp, SkMatrix::I(), proxy_rect);
+    SkMatrix inverse;
+    if (!viewMatrix.invert(&inverse)) {
+        return false;
+    }
+    context->drawNonAARectWithLocalMatrix(*grp, SkMatrix::I(), proxy_rect, inverse);
     return true;
 }