Fix dst bound reported by SkTileImageFilter

src/effects/SkTileImageFilter.cpp

Index: src/effects/SkTileImageFilter.cpp
diff --git a/src/effects/SkTileImageFilter.cpp b/src/effects/SkTileImageFilter.cpp
index b2244b9629042e121653b3e4e884bf207775bc3b..2b7ed940d244ae9b333206b922ff6e7501931d77 100644
--- a/src/effects/SkTileImageFilter.cpp
+++ b/src/effects/SkTileImageFilter.cpp
@@ -93,6 +93,12 @@ bool SkTileImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
     return true;
 }
 
+void SkTileImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
+    // This is a workaround for skia:3194.
+    *dst = src;
+    dst->join(fDstRect);
+}
+
 SkFlattenable* SkTileImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkRect src, dst;