Revert of Fix bounds computation of all 0-input filters.

src/effects/SkBitmapSource.cpp

Index: src/effects/SkBitmapSource.cpp
diff --git a/src/effects/SkBitmapSource.cpp b/src/effects/SkBitmapSource.cpp
index 0d9315b2abfe77d7415afe10dd147a5e4bd8604f..aee4a361f2050b2bf96d612fa8151c50cf2bf3c1 100644
--- a/src/effects/SkBitmapSource.cpp
+++ b/src/effects/SkBitmapSource.cpp
@@ -97,3 +97,9 @@
 void SkBitmapSource::computeFastBounds(const SkRect&, SkRect* dst) const {
     *dst = fDstRect;
 }
+
+bool SkBitmapSource::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
+                                    SkIRect* dst) const {
+    *dst = src;
+    return true;
+}