Always give simple circular rrects a shot at being directly blurred on the GPU

src/effects/SkBlurMaskFilter.cpp

Index: src/effects/SkBlurMaskFilter.cpp
diff --git a/src/effects/SkBlurMaskFilter.cpp b/src/effects/SkBlurMaskFilter.cpp
index e0358bfb1b56ac6cbdee373693cd123ff5e165da..65ed7c543a7ea525dc7175abd4f36649ba824905 100644
--- a/src/effects/SkBlurMaskFilter.cpp
+++ b/src/effects/SkBlurMaskFilter.cpp
@@ -1319,8 +1319,8 @@ bool SkBlurMaskFilterImpl::canFilterMaskGPU(const SkRRect& devRRect,
         return false;
     }
 
-    // We always do circles on the GPU
-    if (!devRRect.isCircle()) {
+    // We always do circles and simple circular rrects on the GPU
+    if (!devRRect.isCircle() && !devRRect.isSimpleCircular()) {
         static const SkScalar kMIN_GPU_BLUR_SIZE  = SkIntToScalar(64);
         static const SkScalar kMIN_GPU_BLUR_SIGMA = SkIntToScalar(32);