Intersect SkPictureImageFilter bounds against clip bounds.

src/effects/SkPictureImageFilter.cpp

Index: src/effects/SkPictureImageFilter.cpp
diff --git a/src/effects/SkPictureImageFilter.cpp b/src/effects/SkPictureImageFilter.cpp
index d0f4d54308cc514228ee1b108e13eca8d039afe6..508f53edc2ac815ff62aa88dfbc504bb3fc43063 100644
--- a/src/effects/SkPictureImageFilter.cpp
+++ b/src/effects/SkPictureImageFilter.cpp
@@ -69,6 +69,9 @@ bool SkPictureImageFilter::onFilterImage(Proxy* proxy, const SkBitmap&, const Co
     SkIRect bounds;
     ctx.ctm().mapRect(&floatBounds, fCropRect);
     floatBounds.roundOut(&bounds);
+    if (!bounds.intersect(ctx.clipBounds())) {
+        return false;
+    }
 
     if (bounds.isEmpty()) {
         offset->fX = offset->fY = 0;