Change signatures of filter bounds methods to return a rect.

src/effects/SkMatrixConvolutionImageFilter.cpp

Index: src/effects/SkMatrixConvolutionImageFilter.cpp
diff --git a/src/effects/SkMatrixConvolutionImageFilter.cpp b/src/effects/SkMatrixConvolutionImageFilter.cpp
index 0d14caf1314b3e4011e149802d165e259b7abfaf..7a25f5f7ebc3105cfec7c5e8c39977d40b7db2b5 100644
--- a/src/effects/SkMatrixConvolutionImageFilter.cpp
+++ b/src/effects/SkMatrixConvolutionImageFilter.cpp
@@ -323,17 +323,18 @@ bool SkMatrixConvolutionImageFilter::onFilterImageDeprecated(Proxy* proxy,
     return true;
 }
 
-void SkMatrixConvolutionImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
-                                                    SkIRect* dst, MapDirection direction) const {
-    *dst = src;
+SkIRect SkMatrixConvolutionImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
+                                                           MapDirection direction) const {
+    SkIRect dst = src;
     int w = fKernelSize.width() - 1, h = fKernelSize.height() - 1;
-    dst->fRight += w;
-    dst->fBottom += h;
+    dst.fRight += w;
+    dst.fBottom += h;
     if (kReverse_MapDirection == direction) {
-        dst->offset(-fKernelOffset);
+        dst.offset(-fKernelOffset);
     } else {
-        dst->offset(fKernelOffset - SkIPoint::Make(w, h));
+        dst.offset(fKernelOffset - SkIPoint::Make(w, h));
     }
+    return dst;
 }
 
 bool SkMatrixConvolutionImageFilter::canComputeFastBounds() const {