Image filters: Make a recursive, forward-mapping bounds traversal.

src/effects/SkTileImageFilter.cpp

Index: src/effects/SkTileImageFilter.cpp
diff --git a/src/effects/SkTileImageFilter.cpp b/src/effects/SkTileImageFilter.cpp
index 55eb8a1d64e0a6133c97ba8cfe327e1348f10ed1..01f9d29305a10d14334059606a122875f2e51c24 100644
--- a/src/effects/SkTileImageFilter.cpp
+++ b/src/effects/SkTileImageFilter.cpp
@@ -116,8 +116,9 @@ void SkTileImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& c
 }
 
 bool SkTileImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
-                                       SkIRect* dst) const {
-    this->onFilterNodeBounds(src, ctm, dst, kReverse_MapDirection);
+                                       SkIRect* dst, MapDirection direction) const {
+    // Don't recurse into inputs.
+    *dst = src;
     return true;
 }